80009957 has 4 divisors (see below), whose sum is σ = 80457120. Its totient is φ = 79562796.

The previous prime is 80009911. The next prime is 80009987. The reversal of 80009957 is 75990008.

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 not a de Polignac number, because 80009957 - 2¹⁰ = 80008933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80009957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80009987) 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, 223313 + ... + 223670.

It is an arithmetic number, because the mean of its divisors is an integer number (20114280).

Almost surely, 2^80009957 is an apocalyptic number.

It is an amenable number.

80009957 is a deficient number, since it is larger than the sum of its proper divisors (447163).

80009957 is a wasteful number, since it uses less digits than its factorization.

80009957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447162.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 80009957 is about 8944.8285059022. The cubic root of 80009957 is about 430.9048136866.

The spelling of 80009957 in words is "eighty million, nine thousand, nine hundred fifty-seven".