990390324 has 72 divisors (see below), whose sum is σ = 2902992064. Its totient is φ = 257241600.

The previous prime is 990390307. The next prime is 990390329. The reversal of 990390324 is 423093099.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990390329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38557 + ... + 58884.

Almost surely, 2^990390324 is an apocalyptic number.

It is an amenable number.

990390324 is an abundant number, since it is smaller than the sum of its proper divisors (1912601740).

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

990390324 is a wasteful number, since it uses less digits than its factorization.

990390324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97477 (or 97464 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 990390324 is about 31470.4674893780. The cubic root of 990390324 is about 996.7864588821.

The spelling of 990390324 in words is "nine hundred ninety million, three hundred ninety thousand, three hundred twenty-four".