79455657 has 4 divisors (see below), whose sum is σ = 105940880. Its totient is φ = 52970436.

The previous prime is 79455653. The next prime is 79455661. The reversal of 79455657 is 75655497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (79455653) and next prime (79455661).

It is not a de Polignac number, because 79455657 - 2² = 79455653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79455653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13242607 + ... + 13242612.

It is an arithmetic number, because the mean of its divisors is an integer number (26485220).

Almost surely, 2^79455657 is an apocalyptic number.

It is an amenable number.

79455657 is a deficient number, since it is larger than the sum of its proper divisors (26485223).

79455657 is a wasteful number, since it uses less digits than its factorization.

79455657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26485222.

The product of its digits is 1323000, while the sum is 48.

The square root of 79455657 is about 8913.7902712595. The cubic root of 79455657 is about 429.9074201265.

The spelling of 79455657 in words is "seventy-nine million, four hundred fifty-five thousand, six hundred fifty-seven".