79607881 has 2 divisors, whose sum is σ = 79607882. Its totient is φ = 79607880.

The previous prime is 79607851. The next prime is 79607903. The reversal of 79607881 is 18870697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77158656 + 2449225 = 8784^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 79607881 - 2⁹ = 79607369 is a prime.

It is a super-2 number, since 2×79607881² = 12674829434620322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79607851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39803940 + 39803941.

It is an arithmetic number, because the mean of its divisors is an integer number (39803941).

Almost surely, 2^79607881 is an apocalyptic number.

It is an amenable number.

79607881 is a deficient number, since it is larger than the sum of its proper divisors (1).

79607881 is an equidigital number, since it uses as much as digits as its factorization.

79607881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 79607881 is about 8922.3248651907. The cubic root of 79607881 is about 430.1817890086.

The spelling of 79607881 in words is "seventy-nine million, six hundred seven thousand, eight hundred eighty-one".