79164889 has 2 divisors, whose sum is σ = 79164890. Its totient is φ = 79164888.

The previous prime is 79164871. The next prime is 79164931. The reversal of 79164889 is 98846197.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 18636489 = 7780^2 + 4317^2 .

It is a cyclic number.

It is not a de Polignac number, because 79164889 - 2⁵ = 79164857 is a prime.

It is not a weakly prime, because it can be changed into another prime (79164829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39582444 + 39582445.

It is an arithmetic number, because the mean of its divisors is an integer number (39582445).

Almost surely, 2^79164889 is an apocalyptic number.

It is an amenable number.

79164889 is a deficient number, since it is larger than the sum of its proper divisors (1).

79164889 is an equidigital number, since it uses as much as digits as its factorization.

79164889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 79164889 is about 8897.4653132226. The cubic root of 79164889 is about 429.3823636801.

The spelling of 79164889 in words is "seventy-nine million, one hundred sixty-four thousand, eight hundred eighty-nine".