80639339 has 8 divisors (see below), whose sum is σ = 90808320. Its totient is φ = 70943400.

The previous prime is 80639327. The next prime is 80639353. The reversal of 80639339 is 93393608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-80639339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80639296 and 80639305.

It is not an unprimeable number, because it can be changed into a prime (80639359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117899 + ... + 118580.

It is an arithmetic number, because the mean of its divisors is an integer number (11351040).

Almost surely, 2^80639339 is an apocalyptic number.

80639339 is a deficient number, since it is larger than the sum of its proper divisors (10168981).

80639339 is a wasteful number, since it uses less digits than its factorization.

80639339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236521.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 80639339 is about 8979.9409240819. The cubic root of 80639339 is about 432.0317388518.

It can be divided in two parts, 8063 and 9339, that multiplied together give a palindrome (75300357).

The spelling of 80639339 in words is "eighty million, six hundred thirty-nine thousand, three hundred thirty-nine".