79966431 has 6 divisors (see below), whose sum is σ = 115507080. Its totient is φ = 53310948.

The previous prime is 79966387. The next prime is 79966457. The reversal of 79966431 is 13466997.

It is not a de Polignac number, because 79966431 - 2¹⁰ = 79965407 is a prime.

It is a super-2 number, since 2×79966431² = 12789260173755522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79966531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4442571 + ... + 4442588.

It is an arithmetic number, because the mean of its divisors is an integer number (19251180).

Almost surely, 2^79966431 is an apocalyptic number.

79966431 is a deficient number, since it is larger than the sum of its proper divisors (35540649).

79966431 is a wasteful number, since it uses less digits than its factorization.

79966431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8885165 (or 8885162 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 79966431 is about 8942.3951489520. The cubic root of 79966431 is about 430.8266610595.

The spelling of 79966431 in words is "seventy-nine million, nine hundred sixty-six thousand, four hundred thirty-one".