80700839 has 4 divisors (see below), whose sum is σ = 81607680. Its totient is φ = 79794000.

The previous prime is 80700797. The next prime is 80700857. The reversal of 80700839 is 93800708.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80700839 - 2²⁴ = 63923623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80700799 and 80700808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80708839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453287 + ... + 453464.

It is an arithmetic number, because the mean of its divisors is an integer number (20401920).

Almost surely, 2^80700839 is an apocalyptic number.

80700839 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80700839 is a deficient number, since it is larger than the sum of its proper divisors (906841).

80700839 is an equidigital number, since it uses as much as digits as its factorization.

80700839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906840.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 80700839 is about 8983.3645701374. The cubic root of 80700839 is about 432.1415413401.

The spelling of 80700839 in words is "eighty million, seven hundred thousand, eight hundred thirty-nine".