79993512 has 24 divisors (see below), whose sum is σ = 216649290. Its totient is φ = 26664480.

The previous prime is 79993429. The next prime is 79993523. The reversal of 79993512 is 21539997.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 5447556 = 8634^2 + 2334^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 555439 + ... + 555582.

Almost surely, 2^79993512 is an apocalyptic number.

79993512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79993512 is an abundant number, since it is smaller than the sum of its proper divisors (136655778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79993512 is a wasteful number, since it uses less digits than its factorization.

79993512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111033 (or 1111026 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 79993512 is about 8943.9092124194. The cubic root of 79993512 is about 430.8752893812.

It can be divided in two parts, 7999 and 3512, that added together give a palindrome (11511).

The spelling of 79993512 in words is "seventy-nine million, nine hundred ninety-three thousand, five hundred twelve".