90009892 has 48 divisors (see below), whose sum is σ = 184710400. Its totient is φ = 37584000.

The previous prime is 90009839. The next prime is 90009901. The reversal of 90009892 is 29890009.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 257734 + ... + 258082.

Almost surely, 2^90009892 is an apocalyptic number.

It is an amenable number.

90009892 is an abundant number, since it is smaller than the sum of its proper divisors (94700508).

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

90009892 is a wasteful number, since it uses less digits than its factorization.

90009892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 90009892 is about 9487.3543203572. The cubic root of 90009892 is about 448.1568925934.

The spelling of 90009892 in words is "ninety million, nine thousand, eight hundred ninety-two".