80790957 has 18 divisors (see below), whose sum is σ = 126367722. Its totient is φ = 49716576.

The previous prime is 80790947. The next prime is 80790959. The reversal of 80790957 is 75909708.

It can be written as a sum of positive squares in 3 ways, for example, as 6245001 + 74545956 = 2499^2 + 8634^2 .

It is not a de Polignac number, because 80790957 - 2⁸ = 80790701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80790959) 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 17 ways as a sum of consecutive naturals, for example, 25038 + ... + 28079.

It is an arithmetic number, because the mean of its divisors is an integer number (7020429).

Almost surely, 2^80790957 is an apocalyptic number.

It is an amenable number.

80790957 is a deficient number, since it is larger than the sum of its proper divisors (45576765).

80790957 is a wasteful number, since it uses less digits than its factorization.

80790957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53149 (or 53133 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 80790957 is about 8988.3789973499. The cubic root of 80790957 is about 432.3023378689.

The spelling of 80790957 in words is "eighty million, seven hundred ninety thousand, nine hundred fifty-seven".