879389056 has 128 divisors (see below), whose sum is σ = 2283543360. Its totient is φ = 327352320.

The previous prime is 879389051. The next prime is 879389057. The reversal of 879389056 is 650983978.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×879389056² = 1546650223625142272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 879388988 and 879389006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879389051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195796 + ... + 200236.

Almost surely, 2^879389056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 879389056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1141771680).

879389056 is an abundant number, since it is smaller than the sum of its proper divisors (1404154304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

879389056 is a wasteful number, since it uses less digits than its factorization.

879389056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492 (or 4480 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 879389056 is about 29654.4947014782. The cubic root of 879389056 is about 958.0621557381.

The spelling of 879389056 in words is "eight hundred seventy-nine million, three hundred eighty-nine thousand, fifty-six".