872957823 has 4 divisors (see below), whose sum is σ = 1163943768. Its totient is φ = 581971880.

The previous prime is 872957819. The next prime is 872957843. The reversal of 872957823 is 328759278.

872957823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 872957823 - 2² = 872957819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872957843) 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, 145492968 + ... + 145492973.

It is an arithmetic number, because the mean of its divisors is an integer number (290985942).

Almost surely, 2^872957823 is an apocalyptic number.

872957823 is a deficient number, since it is larger than the sum of its proper divisors (290985945).

872957823 is a wasteful number, since it uses less digits than its factorization.

872957823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290985944.

The product of its digits is 1693440, while the sum is 51.

The square root of 872957823 is about 29545.8596591807. The cubic root of 872957823 is about 955.7209081112.

The spelling of 872957823 in words is "eight hundred seventy-two million, nine hundred fifty-seven thousand, eight hundred twenty-three".