79871954 has 16 divisors (see below), whose sum is σ = 122505048. Its totient is φ = 39042432.

The previous prime is 79871929. The next prime is 79872019. The reversal of 79871954 is 45917897.

It can be written as a sum of positive squares in 4 ways, for example, as 54096025 + 25775929 = 7355^2 + 5077^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32414 + ... + 34790.

Almost surely, 2^79871954 is an apocalyptic number.

79871954 is a deficient number, since it is larger than the sum of its proper divisors (42633094).

79871954 is a wasteful number, since it uses less digits than its factorization.

79871954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749.

The product of its digits is 635040, while the sum is 50.

The square root of 79871954 is about 8937.1110544739. Note that the first 3 decimals coincide. The cubic root of 79871954 is about 430.6569262921.

The spelling of 79871954 in words is "seventy-nine million, eight hundred seventy-one thousand, nine hundred fifty-four".