λ
Sigma Notebook

1,978,439

1978439
Deficient Odd Prime

1,978,439 is odd and not a perfect square. Its factorization is 1978439 and its 2 divisors sum to 1,978,440.

Prime Factor Structure

Factorization String 1978439
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 1,978,440
Proper Divisor Sum 1
Digit Sum / Digital Root 41 (Root: 5)
Adjacent Primes #1978433 ← → #1978441

Radix Representation

Decimal 1978439
Binary 111100011000001000111 (21 bits)
Octal 0o7430107
Hexadecimal 0x1E3047

Divisor Catalog (2)

Collatz Trajectory (145 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,978,439 5,935,318 2,967,659 8,902,978 4,451,489 13,354,468 6,677,234 3,338,617 10,015,852 5,007,926 2,503,963 7,511,890 3,755,945 11,267,836 5,633,918 2,816,959 8,450,878 4,225,439 12,676,318 6,338,159 19,014,478 9,507,239 28,521,718 14,260,859 42,782,578 21,391,289 64,173,868 32,086,934 16,043,467 48,130,402 24,065,201 72,195,604 36,097,802 18,048,901 54,146,704 27,073,352 13,536,676 6,768,338 3,384,169 10,152,508 5,076,254 2,538,127 7,614,382 3,807,191 11,421,574 5,710,787 17,132,362 8,566,181 25,698,544 12,849,272 6,424,636 3,212,318 1,606,159 4,818,478 2,409,239 7,227,718 3,613,859 10,841,578 5,420,789 16,262,368

More profiles

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