79040957 has 4 divisors (see below), whose sum is σ = 79454976. Its totient is φ = 78626940.

The previous prime is 79040947. The next prime is 79040971. The reversal of 79040957 is 75904097.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 79040957 - 2¹⁸ = 78778813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79040947) 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, 206723 + ... + 207104.

It is an arithmetic number, because the mean of its divisors is an integer number (19863744).

Almost surely, 2^79040957 is an apocalyptic number.

It is an amenable number.

79040957 is a deficient number, since it is larger than the sum of its proper divisors (414019).

79040957 is a wasteful number, since it uses less digits than its factorization.

79040957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414018.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 79040957 is about 8890.4981300262. The cubic root of 79040957 is about 429.1581817700.

It can be divided in two parts, 79040 and 957, that added together give a palindrome (79997).

The spelling of 79040957 in words is "seventy-nine million, forty thousand, nine hundred fifty-seven".