80972859 has 16 divisors (see below), whose sum is σ = 118295424. Its totient is φ = 48859200.

The previous prime is 80972833. The next prime is 80972897. The reversal of 80972859 is 95827908.

It is a happy number.

It is not a de Polignac number, because 80972859 - 2²⁰ = 79924283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80971859) 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, 2424 + ... + 12954.

It is an arithmetic number, because the mean of its divisors is an integer number (7393464).

Almost surely, 2^80972859 is an apocalyptic number.

80972859 is a deficient number, since it is larger than the sum of its proper divisors (37322565).

80972859 is a wasteful number, since it uses less digits than its factorization.

80972859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10778.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 80972859 is about 8998.4920403365. The cubic root of 80972859 is about 432.6265396497.

The spelling of 80972859 in words is "eighty million, nine hundred seventy-two thousand, eight hundred fifty-nine".