79989626 has 4 divisors (see below), whose sum is σ = 119984442. Its totient is φ = 39994812.

The previous prime is 79989619. The next prime is 79989631. The reversal of 79989626 is 62698997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64818601 + 15171025 = 8051^2 + 3895^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19997405 + ... + 19997408.

Almost surely, 2^79989626 is an apocalyptic number.

79989626 is a deficient number, since it is larger than the sum of its proper divisors (39994816).

79989626 is a wasteful number, since it uses less digits than its factorization.

79989626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39994815.

The product of its digits is 2939328, while the sum is 56.

The square root of 79989626 is about 8943.6919669676. The cubic root of 79989626 is about 430.8683121134.

The spelling of 79989626 in words is "seventy-nine million, nine hundred eighty-nine thousand, six hundred twenty-six".