80439273 has 6 divisors (see below), whose sum is σ = 116190074. Its totient is φ = 53626176.

The previous prime is 80439269. The next prime is 80439277. The reversal of 80439273 is 37293408.

It is an interprime number because it is at equal distance from previous prime (80439269) and next prime (80439277).

It can be written as a sum of positive squares in only one way, i.e., 46949904 + 33489369 = 6852^2 + 5787^2 .

It is not a de Polignac number, because 80439273 - 2² = 80439269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80439277) 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, 4468840 + ... + 4468857.

Almost surely, 2^80439273 is an apocalyptic number.

It is an amenable number.

80439273 is a deficient number, since it is larger than the sum of its proper divisors (35750801).

80439273 is a wasteful number, since it uses less digits than its factorization.

80439273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937703 (or 8937700 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 80439273 is about 8968.7944005870. The cubic root of 80439273 is about 431.6741530747.

The spelling of 80439273 in words is "eighty million, four hundred thirty-nine thousand, two hundred seventy-three".