9990590032 has 20 divisors (see below), whose sum is σ = 20375546080. Its totient is φ = 4732384608.

The previous prime is 9990590011. The next prime is 9990590059. The reversal of 9990590032 is 2300950999.

It is a happy number.

It is a super-2 number, since 2×9990590032² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16431588 + ... + 16432195.

It is an arithmetic number, because the mean of its divisors is an integer number (1018777304).

Almost surely, 2^9990590032 is an apocalyptic number.

It is an amenable number.

9990590032 is an abundant number, since it is smaller than the sum of its proper divisors (10384956048).

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

9990590032 is a wasteful number, since it uses less digits than its factorization.

9990590032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32863810 (or 32863804 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 46.

The square root of 9990590032 is about 99952.9390863520. The cubic root of 9990590032 is about 2153.7587059048.

The spelling of 9990590032 in words is "nine billion, nine hundred ninety million, five hundred ninety thousand, thirty-two".