879893569 has 3 divisors (see below), whose sum is σ = 879923233. Its totient is φ = 879863906.

The previous prime is 879893537. The next prime is 879893587. The reversal of 879893569 is 965398978.

It is a happy number.

The square root of 879893569 is 29663.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 965398978 = 2 ⋅482699489.

It is not a de Polignac number, because 879893569 - 2⁵ = 879893537 is a prime.

It is a super-2 number, since 2×879893569² = 1548425385535115522, which 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 879893569.

It is not an unprimeable number, because it can be changed into a prime (879893269) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14832 + ... + 44494.

Almost surely, 2^879893569 is an apocalyptic number.

879893569 is the 29663-rd square number.

879893569 is the 14832-nd centered octagonal number.

It is an amenable number.

879893569 is a deficient number, since it is larger than the sum of its proper divisors (29664).

879893569 is an frugal number, since it uses more digits than its factorization.

879893569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59326 (or 29663 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The cubic root of 879893569 is about 958.2453368545.

Multiplying 879893569 by its sum of digits (64), we get a square (56313188416 = 237304²).

The spelling of 879893569 in words is "eight hundred seventy-nine million, eight hundred ninety-three thousand, five hundred sixty-nine".