900089990 has 64 divisors (see below), whose sum is σ = 1758977856. Its totient is φ = 330350592.

The previous prime is 900089989. The next prime is 900090049. The reversal of 900089990 is 99980009.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2549654 + ... + 2550006.

It is an arithmetic number, because the mean of its divisors is an integer number (27484029).

Almost surely, 2^900089990 is an apocalyptic number.

900089990 is a deficient number, since it is larger than the sum of its proper divisors (858887866).

900089990 is a wasteful number, since it uses less digits than its factorization.

900089990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 900089990 is about 30001.4997958435. The cubic root of 900089990 is about 965.5215629368.

The spelling of 900089990 in words is "nine hundred million, eighty-nine thousand, nine hundred ninety".