879549990 has 128 divisors (see below), whose sum is σ = 2416780800. Its totient is φ = 202890240.

The previous prime is 879549989. The next prime is 879549997. The reversal of 879549990 is 99945978.

It is a happy number.

879549990 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879549997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 697981 + ... + 699239.

It is an arithmetic number, because the mean of its divisors is an integer number (18881100).

Almost surely, 2^879549990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 879549990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208390400).

879549990 is an abundant number, since it is smaller than the sum of its proper divisors (1537230810).

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

879549990 is a wasteful number, since it uses less digits than its factorization.

879549990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The square root of 879549990 is about 29657.2080614477. The cubic root of 879549990 is about 958.1205960721.

It can be divided in two parts, 8795 and 49990, that added together give a palindrome (58785).

The spelling of 879549990 in words is "eight hundred seventy-nine million, five hundred forty-nine thousand, nine hundred ninety".