79981059 has 16 divisors (see below), whose sum is σ = 108380160. Its totient is φ = 52458240.

The previous prime is 79981021. The next prime is 79981079. The reversal of 79981059 is 95018997.

It is a de Polignac number, because none of the positive numbers 2^k-79981059 is a prime.

It is a super-2 number, since 2×79981059² = 12793939597522962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79980999 and 79981017.

It is not an unprimeable number, because it can be changed into a prime (79981009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54862 + ... + 56300.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^79981059 is an apocalyptic number.

79981059 is a deficient number, since it is larger than the sum of its proper divisors (28399101).

79981059 is a wasteful number, since it uses less digits than its factorization.

79981059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 79981059 is about 8943.2130132296. The cubic root of 79981059 is about 430.8529293660.

The spelling of 79981059 in words is "seventy-nine million, nine hundred eighty-one thousand, fifty-nine".