879117390 has 48 divisors (see below), whose sum is σ = 2295246096. Its totient is φ = 233452800.

The previous prime is 879117383. The next prime is 879117391. The reversal of 879117390 is 93711978.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879117391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1425 + ... + 41955.

It is an arithmetic number, because the mean of its divisors is an integer number (47817627).

Almost surely, 2^879117390 is an apocalyptic number.

879117390 is an abundant number, since it is smaller than the sum of its proper divisors (1416128706).

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

879117390 is a wasteful number, since it uses less digits than its factorization.

879117390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40785 (or 40782 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 879117390 is about 29649.9138278680. The cubic root of 879117390 is about 957.9634888595.

The spelling of 879117390 in words is "eight hundred seventy-nine million, one hundred seventeen thousand, three hundred ninety".