79157953 has 4 divisors (see below), whose sum is σ = 90466240. Its totient is φ = 67849668.

The previous prime is 79157893. The next prime is 79157989. The reversal of 79157953 is 35975197.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35975197 = 23 ⋅1564139.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79157953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79157993) 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, 5654133 + ... + 5654146.

It is an arithmetic number, because the mean of its divisors is an integer number (22616560).

Almost surely, 2^79157953 is an apocalyptic number.

It is an amenable number.

79157953 is a deficient number, since it is larger than the sum of its proper divisors (11308287).

79157953 is a wasteful number, since it uses less digits than its factorization.

79157953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11308286.

The product of its digits is 297675, while the sum is 46.

The square root of 79157953 is about 8897.0755307573. The cubic root of 79157953 is about 429.3698232593.

The spelling of 79157953 in words is "seventy-nine million, one hundred fifty-seven thousand, nine hundred fifty-three".