79989624 has 192 divisors, whose sum is σ = 270073440. Its totient is φ = 21012480.

The previous prime is 79989619. The next prime is 79989631. The reversal of 79989624 is 42698997.

79989624 is a `hidden beast` number, since 7 + 9 + 9 + 8 + 9 + 624 = 666.

It is a super-2 number, since 2×79989624² = 12796679895322752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174804 + ... + 175260.

Almost surely, 2^79989624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79989624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135036720).

79989624 is an abundant number, since it is smaller than the sum of its proper divisors (190083816).

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

79989624 is a wasteful number, since it uses less digits than its factorization.

79989624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 503 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 79989624 is about 8943.6918551569. The cubic root of 79989624 is about 430.8683085223.

The spelling of 79989624 in words is "seventy-nine million, nine hundred eighty-nine thousand, six hundred twenty-four".