80356379 has 4 divisors (see below), whose sum is σ = 82225176. Its totient is φ = 78487584.

The previous prime is 80356363. The next prime is 80356439. The reversal of 80356379 is 97365308.

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 80356379 - 2⁴ = 80356363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80356349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934334 + ... + 934419.

It is an arithmetic number, because the mean of its divisors is an integer number (20556294).

Almost surely, 2^80356379 is an apocalyptic number.

80356379 is a deficient number, since it is larger than the sum of its proper divisors (1868797).

80356379 is a wasteful number, since it uses less digits than its factorization.

80356379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868796.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 80356379 is about 8964.1719639909. The cubic root of 80356379 is about 431.5258196604.

The spelling of 80356379 in words is "eighty million, three hundred fifty-six thousand, three hundred seventy-nine".