79555039 has 2 divisors, whose sum is σ = 79555040. Its totient is φ = 79555038.

The previous prime is 79555013. The next prime is 79555043. The reversal of 79555039 is 93055597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79555039 - 2⁷ = 79554911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79554986 and 79555004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79555009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39777519 + 39777520.

It is an arithmetic number, because the mean of its divisors is an integer number (39777520).

Almost surely, 2^79555039 is an apocalyptic number.

79555039 is a deficient number, since it is larger than the sum of its proper divisors (1).

79555039 is an equidigital number, since it uses as much as digits as its factorization.

79555039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 212625, while the sum is 43.

The square root of 79555039 is about 8919.3631499115. The cubic root of 79555039 is about 430.0865861331.

The spelling of 79555039 in words is "seventy-nine million, five hundred fifty-five thousand, thirty-nine".