990989132 has 36 divisors (see below), whose sum is σ = 2105092080. Its totient is φ = 406242144.

The previous prime is 990989123. The next prime is 990989149. The reversal of 990989132 is 231989099.

It is a super-2 number, since 2×990989132² = 1964118919484226848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105407 + ... + 114422.

It is an arithmetic number, because the mean of its divisors is an integer number (58474780).

Almost surely, 2^990989132 is an apocalyptic number.

990989132 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

990989132 is an abundant number, since it is smaller than the sum of its proper divisors (1114102948).

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

990989132 is a wasteful number, since it uses less digits than its factorization.

990989132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219870 (or 219861 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 990989132 is about 31479.9798602223. The cubic root of 990989132 is about 996.9873101479.

The spelling of 990989132 in words is "nine hundred ninety million, nine hundred eighty-nine thousand, one hundred thirty-two".