80138079 has 60 divisors (see below), whose sum is σ = 141967848. Its totient is φ = 44906400.

The previous prime is 80138063. The next prime is 80138081. The reversal of 80138079 is 97083108.

It is not a de Polignac number, because 80138079 - 2⁴ = 80138063 is a prime.

It is a super-2 number, since 2×80138079² = 12844223411620482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80138089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 241944 + ... + 242274.

Almost surely, 2^80138079 is an apocalyptic number.

80138079 is a deficient number, since it is larger than the sum of its proper divisors (61829769).

80138079 is a wasteful number, since it uses less digits than its factorization.

80138079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 80138079 is about 8951.9874329671. The cubic root of 80138079 is about 431.1346973408.

The spelling of 80138079 in words is "eighty million, one hundred thirty-eight thousand, seventy-nine".