900089988 has 24 divisors (see below), whose sum is σ = 2400240192. Its totient is φ = 257168544.

The previous prime is 900089987. The next prime is 900089989. The reversal of 900089988 is 889980009.

It is an interprime number because it is at equal distance from previous prime (900089987) and next prime (900089989).

It is a self number, because there is not a number n which added to its sum of digits gives 900089988.

It is not an unprimeable number, because it can be changed into a prime (900089987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5357595 + ... + 5357762.

It is an arithmetic number, because the mean of its divisors is an integer number (100010008).

Almost surely, 2^900089988 is an apocalyptic number.

It is an amenable number.

900089988 is an abundant number, since it is smaller than the sum of its proper divisors (1500150204).

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

900089988 is a wasteful number, since it uses less digits than its factorization.

900089988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715371 (or 10715369 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The square root of 900089988 is about 30001.4997625119. The cubic root of 900089988 is about 965.5215622216.

The spelling of 900089988 in words is "nine hundred million, eighty-nine thousand, nine hundred eighty-eight".