900999008 has 96 divisors (see below), whose sum is σ = 2193033024. Its totient is φ = 354834432.

The previous prime is 900999007. The next prime is 900999013. The reversal of 900999008 is 800999009.

It is a self number, because there is not a number n which added to its sum of digits gives 900999008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900999007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806066 + ... + 807182.

It is an arithmetic number, because the mean of its divisors is an integer number (22844094).

Almost surely, 2^900999008 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 900999008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096516512).

900999008 is an abundant number, since it is smaller than the sum of its proper divisors (1292034016).

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

900999008 is a wasteful number, since it uses less digits than its factorization.

900999008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1416 counting only the distinct ones).

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

The square root of 900999008 is about 30016.6455154469. The cubic root of 900999008 is about 965.8464864425.

Subtracting from 900999008 its reverse (800999009), we obtain a palindrome (99999999).

The spelling of 900999008 in words is "nine hundred million, nine hundred ninety-nine thousand, eight".