79161885 has 72 divisors (see below), whose sum is σ = 158337504. Its totient is φ = 36279360.

The previous prime is 79161829. The next prime is 79161899. The reversal of 79161885 is 58816197.

It is not a de Polignac number, because 79161885 - 2⁶ = 79161821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 79161885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 178474 + ... + 178916.

It is an arithmetic number, because the mean of its divisors is an integer number (2199132).

Almost surely, 2^79161885 is an apocalyptic number.

It is an amenable number.

79161885 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

79161885 is a wasteful number, since it uses less digits than its factorization.

79161885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 481 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 79161885 is about 8897.2964994992. The cubic root of 79161885 is about 429.3769324805.

It can be divided in two parts, 7916 and 1885, that added together give a square (9801 = 99²).

The spelling of 79161885 in words is "seventy-nine million, one hundred sixty-one thousand, eight hundred eighty-five".