80039191 has 4 divisors (see below), whose sum is σ = 84251800. Its totient is φ = 75826584.

The previous prime is 80039173. The next prime is 80039207. The reversal of 80039191 is 19193008.

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 80039191 - 2¹¹ = 80037143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80039161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106276 + ... + 2106313.

It is an arithmetic number, because the mean of its divisors is an integer number (21062950).

Almost surely, 2^80039191 is an apocalyptic number.

80039191 is a deficient number, since it is larger than the sum of its proper divisors (4212609).

80039191 is a wasteful number, since it uses less digits than its factorization.

80039191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212608.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 80039191 is about 8946.4624852508. The cubic root of 80039191 is about 430.9572885613.

The spelling of 80039191 in words is "eighty million, thirty-nine thousand, one hundred ninety-one".