79129144 has 16 divisors (see below), whose sum is σ = 150582600. Its totient is φ = 38973792.

The previous prime is 79129133. The next prime is 79129147. The reversal of 79129144 is 44192197.

It is a super-2 number, since 2×79129144² = 12522842860345472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79129147) 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, 73279 + ... + 74350.

Almost surely, 2^79129144 is an apocalyptic number.

It is an amenable number.

79129144 is a deficient number, since it is larger than the sum of its proper divisors (71453456).

79129144 is a wasteful number, since it uses less digits than its factorization.

79129144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147702 (or 147698 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 79129144 is about 8895.4563682815. The cubic root of 79129144 is about 429.3177281941.

The spelling of 79129144 in words is "seventy-nine million, one hundred twenty-nine thousand, one hundred forty-four".