990258912 has 48 divisors (see below), whose sum is σ = 2888257680. Its totient is φ = 330086016.

The previous prime is 990258869. The next prime is 990258931. The reversal of 990258912 is 219852099.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×990258912² = 1961225425590847488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 572203 + ... + 573930.

It is an arithmetic number, because the mean of its divisors is an integer number (60172035).

Almost surely, 2^990258912 is an apocalyptic number.

It is an amenable number.

990258912 is an abundant number, since it is smaller than the sum of its proper divisors (1897998768).

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

990258912 is a wasteful number, since it uses less digits than its factorization.

990258912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146152 (or 1146138 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 990258912 is about 31468.3795578991. The cubic root of 990258912 is about 996.7423700372.

The spelling of 990258912 in words is "nine hundred ninety million, two hundred fifty-eight thousand, nine hundred twelve".