879500725489 has 9 divisors (see below), whose sum is σ = 890303582073. Its totient is φ = 868827430212.

The previous prime is 879500725457. The next prime is 879500725529. The reversal of 879500725489 is 984527005978.

The square root of 879500725489 is 937817.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 879500725489 - 2⁵ = 879500725457 is a prime.

It is a super-2 number, since 2×879500725489² (a number of 25 digits) contains 22 as substring.

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 879500725489.

It is not an unprimeable number, because it can be changed into a prime (879500735489) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77833162 + ... + 77844460.

Almost surely, 2^879500725489 is an apocalyptic number.

879500725489 is the 937817-th square number.

879500725489 is the 468909-th centered octagonal number.

It is an amenable number.

879500725489 is a deficient number, since it is larger than the sum of its proper divisors (10802856584).

879500725489 is an frugal number, since it uses more digits than its factorization.

879500725489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22764 (or 11382 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 64.

Multiplying 879500725489 by its sum of digits (64), we get a square (56288046431296 = 7502536²).

The spelling of 879500725489 in words is "eight hundred seventy-nine billion, five hundred million, seven hundred twenty-five thousand, four hundred eighty-nine".