80165439 has 6 divisors (see below), whose sum is σ = 115794536. Its totient is φ = 53443620.

The previous prime is 80165431. The next prime is 80165453. The reversal of 80165439 is 93456108.

It is not a de Polignac number, because 80165439 - 2³ = 80165431 is a prime.

It is a super-2 number, since 2×80165439² = 12852995220125442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80165431) 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, 4453627 + ... + 4453644.

Almost surely, 2^80165439 is an apocalyptic number.

80165439 is a deficient number, since it is larger than the sum of its proper divisors (35629097).

80165439 is a wasteful number, since it uses less digits than its factorization.

80165439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8907277 (or 8907274 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80165439 is about 8953.5154548367. The cubic root of 80165439 is about 431.1837564286.

The spelling of 80165439 in words is "eighty million, one hundred sixty-five thousand, four hundred thirty-nine".