80039816 has 24 divisors (see below), whose sum is σ = 156891630. Its totient is φ = 38277888.

The previous prime is 80039809. The next prime is 80039819. The reversal of 80039816 is 61893008.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 33062500 = 6854^2 + 5750^2 .

It is not an unprimeable number, because it can be changed into a prime (80039819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5225 + ... + 13688.

Almost surely, 2^80039816 is an apocalyptic number.

It is an amenable number.

80039816 is a deficient number, since it is larger than the sum of its proper divisors (76851814).

80039816 is a wasteful number, since it uses less digits than its factorization.

80039816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18965 (or 18938 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 80039816 is about 8946.4974151899. The cubic root of 80039816 is about 430.9584102935.

The spelling of 80039816 in words is "eighty million, thirty-nine thousand, eight hundred sixteen".