79974431 has 8 divisors (see below), whose sum is σ = 82857600. Its totient is φ = 77099680.

The previous prime is 79974413. The next prime is 79974449. The reversal of 79974431 is 13447997.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79974413) and next prime (79974449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79974431 - 2¹⁰ = 79973407 is a prime.

It is a super-2 number, since 2×79974431² = 12791819227547522, 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 (79974331) 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 7 ways as a sum of consecutive naturals, for example, 22130 + ... + 25488.

It is an arithmetic number, because the mean of its divisors is an integer number (10357200).

Almost surely, 2^79974431 is an apocalyptic number.

79974431 is a deficient number, since it is larger than the sum of its proper divisors (2883169).

79974431 is a wasteful number, since it uses less digits than its factorization.

79974431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209.

The product of its digits is 190512, while the sum is 44.

The square root of 79974431 is about 8942.8424452184. The cubic root of 79974431 is about 430.8410274977.

The spelling of 79974431 in words is "seventy-nine million, nine hundred seventy-four thousand, four hundred thirty-one".