990040444232 has 32 divisors (see below), whose sum is σ = 2123138589120. Its totient is φ = 423978377280.

The previous prime is 990040444207. The next prime is 990040444259. The reversal of 990040444232 is 232444040099.

It is a self number, because there is not a number n which added to its sum of digits gives 990040444232.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6690119 + ... + 6836502.

It is an arithmetic number, because the mean of its divisors is an integer number (66348080910).

Almost surely, 2^990040444232 is an apocalyptic number.

It is an amenable number.

990040444232 is an abundant number, since it is smaller than the sum of its proper divisors (1133098144888).

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

990040444232 is a wasteful number, since it uses less digits than its factorization.

990040444232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13527941 (or 13527937 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 990040444232 in words is "nine hundred ninety billion, forty million, four hundred forty-four thousand, two hundred thirty-two".