79431361 has 12 divisors (see below), whose sum is σ = 84879360. Its totient is φ = 74315840.

The previous prime is 79431347. The next prime is 79431371. The reversal of 79431361 is 16313497.

79431361 = T₂₀₈ + T₂₀₉ + ... + T₇₈₅.

It is not a de Polignac number, because 79431361 - 2¹⁵ = 79398593 is a prime.

It is a super-2 number, since 2×79431361² = 12618682220624642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79431301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54480 + ... + 55918.

It is an arithmetic number, because the mean of its divisors is an integer number (7073280).

Almost surely, 2^79431361 is an apocalyptic number.

It is an amenable number.

79431361 is a deficient number, since it is larger than the sum of its proper divisors (5447999).

79431361 is a wasteful number, since it uses less digits than its factorization.

79431361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1647 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 79431361 is about 8912.4273349071. The cubic root of 79431361 is about 429.8635965403.

The spelling of 79431361 in words is "seventy-nine million, four hundred thirty-one thousand, three hundred sixty-one".