80371949 has 4 divisors (see below), whose sum is σ = 91853664. Its totient is φ = 68890236.

The previous prime is 80371939. The next prime is 80371961. The reversal of 80371949 is 94917308.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80371949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80371909) 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, 5740847 + ... + 5740860.

It is an arithmetic number, because the mean of its divisors is an integer number (22963416).

Almost surely, 2^80371949 is an apocalyptic number.

It is an amenable number.

80371949 is a deficient number, since it is larger than the sum of its proper divisors (11481715).

80371949 is a wasteful number, since it uses less digits than its factorization.

80371949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11481714.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 80371949 is about 8965.0403791617. The cubic root of 80371949 is about 431.5536889397.

The spelling of 80371949 in words is "eighty million, three hundred seventy-one thousand, nine hundred forty-nine".