879947904 has 128 divisors (see below), whose sum is σ = 2612554560. Its totient is φ = 260096000.

The previous prime is 879947903. The next prime is 879947909. The reversal of 879947904 is 409749978.

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

It is not an unprimeable number, because it can be changed into a prime (879947903) 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, 170644 + ... + 175724.

Almost surely, 2^879947904 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 879947904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306277280).

879947904 is an abundant number, since it is smaller than the sum of its proper divisors (1732606656).

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

879947904 is a wasteful number, since it uses less digits than its factorization.

879947904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150 (or 5138 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 879947904 is about 29663.9158574858. The cubic root of 879947904 is about 958.2650609023.

The spelling of 879947904 in words is "eight hundred seventy-nine million, nine hundred forty-seven thousand, nine hundred four".