990023332 has 6 divisors (see below), whose sum is σ = 1732540838. Its totient is φ = 495011664.

The previous prime is 990023297. The next prime is 990023381. The reversal of 990023332 is 233320099.

It can be written as a sum of positive squares in only one way, i.e., 852289636 + 137733696 = 29194^2 + 11736^2 .

It is a junction number, because it is equal to n+sod(n) for n = 990023294 and 990023303.

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 as a sum of consecutive naturals, namely, 123752913 + ... + 123752920.

Almost surely, 2^990023332 is an apocalyptic number.

It is an amenable number.

990023332 is a deficient number, since it is larger than the sum of its proper divisors (742517506).

990023332 is a wasteful number, since it uses less digits than its factorization.

990023332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247505837 (or 247505835 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 990023332 is about 31464.6362127389. The cubic root of 990023332 is about 996.6633229693.

The spelling of 990023332 in words is "nine hundred ninety million, twenty-three thousand, three hundred thirty-two".