80811379 has 16 divisors (see below), whose sum is σ = 90810720. Its totient is φ = 71285760.

The previous prime is 80811361. The next prime is 80811407. The reversal of 80811379 is 97311808.

It is a cyclic number.

It is not a de Polignac number, because 80811379 - 2⁵ = 80811347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80811349) 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 15 ways as a sum of consecutive naturals, for example, 55837 + ... + 57265.

It is an arithmetic number, because the mean of its divisors is an integer number (5675670).

Almost surely, 2^80811379 is an apocalyptic number.

80811379 is a deficient number, since it is larger than the sum of its proper divisors (9999341).

80811379 is a wasteful number, since it uses less digits than its factorization.

80811379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 80811379 is about 8989.5149479825. The cubic root of 80811379 is about 432.3387599922.

The spelling of 80811379 in words is "eighty million, eight hundred eleven thousand, three hundred seventy-nine".