879661404 has 144 divisors (see below), whose sum is σ = 2424794400. Its totient is φ = 275717376.

The previous prime is 879661403. The next prime is 879661429. The reversal of 879661404 is 404166978.

879661404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 879661404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879661403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5084662 + ... + 5084834.

It is an arithmetic number, because the mean of its divisors is an integer number (16838850).

Almost surely, 2^879661404 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 879661404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212397200).

879661404 is an abundant number, since it is smaller than the sum of its proper divisors (1545132996).

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

879661404 is a wasteful number, since it uses less digits than its factorization.

879661404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 879661404 is about 29659.0863648899. The cubic root of 879661404 is about 958.1610499187.

The spelling of 879661404 in words is "eight hundred seventy-nine million, six hundred sixty-one thousand, four hundred four".