79472831 has 4 divisors (see below), whose sum is σ = 79542912. Its totient is φ = 79402752.

The previous prime is 79472821. The next prime is 79472849. The reversal of 79472831 is 13827497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13827497 = 19 ⋅727763.

It is a cyclic number.

It is not a de Polignac number, because 79472831 - 2¹⁰ = 79471807 is a prime.

It is a super-2 number, since 2×79472831² = 12631861734309122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79472821) 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, 33311 + ... + 35616.

It is an arithmetic number, because the mean of its divisors is an integer number (19885728).

Almost surely, 2^79472831 is an apocalyptic number.

79472831 is a deficient number, since it is larger than the sum of its proper divisors (70081).

79472831 is a wasteful number, since it uses less digits than its factorization.

79472831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70080.

The product of its digits is 84672, while the sum is 41.

The square root of 79472831 is about 8914.7535580071. The cubic root of 79472831 is about 429.9383921110.

The spelling of 79472831 in words is "seventy-nine million, four hundred seventy-two thousand, eight hundred thirty-one".