990895500 has 288 divisors, whose sum is σ = 3625090560. Its totient is φ = 223171200.

The previous prime is 990895487. The next prime is 990895517. The reversal of 990895500 is 5598099.

990895500 is a `hidden beast` number, since 9 + 90 + 8 + 9 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2614311 + ... + 2614689.

It is an arithmetic number, because the mean of its divisors is an integer number (12587120).

Almost surely, 2^990895500 is an apocalyptic number.

990895500 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990895500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1812545280).

990895500 is an abundant number, since it is smaller than the sum of its proper divisors (2634195060).

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

990895500 is a wasteful number, since it uses less digits than its factorization.

990895500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 990895500 is about 31478.4926576861. The cubic root of 990895500 is about 996.9559095829.

The spelling of 990895500 in words is "nine hundred ninety million, eight hundred ninety-five thousand, five hundred".