90879900 has 72 divisors (see below), whose sum is σ = 274399104. Its totient is φ = 23179200.

The previous prime is 90879889. The next prime is 90879953. The reversal of 90879900 is 997809.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315 + ... + 13485.

Almost surely, 2^90879900 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 90879900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137199552).

90879900 is an abundant number, since it is smaller than the sum of its proper divisors (183519204).

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

90879900 is a wasteful number, since it uses less digits than its factorization.

90879900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13211 (or 13204 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 90879900 is about 9533.0949853655. The cubic root of 90879900 is about 449.5961809409.

It can be divided in two parts, 908 and 79900, that added together give a palindrome (80808).

The spelling of 90879900 in words is "ninety million, eight hundred seventy-nine thousand, nine hundred".