80418939 has 4 divisors (see below), whose sum is σ = 107225256. Its totient is φ = 53612624.

The previous prime is 80418911. The next prime is 80418941. The reversal of 80418939 is 93981408.

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 80418939 - 2⁵ = 80418907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80418939.

It is not an unprimeable number, because it can be changed into a prime (80418139) 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, 13403154 + ... + 13403159.

It is an arithmetic number, because the mean of its divisors is an integer number (26806314).

Almost surely, 2^80418939 is an apocalyptic number.

80418939 is a deficient number, since it is larger than the sum of its proper divisors (26806317).

80418939 is a wasteful number, since it uses less digits than its factorization.

80418939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26806316.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 80418939 is about 8967.6607317628. The cubic root of 80418939 is about 431.6377761424.

The spelling of 80418939 in words is "eighty million, four hundred eighteen thousand, nine hundred thirty-nine".