999990332 has 48 divisors (see below), whose sum is σ = 1937924352. Its totient is φ = 447722880.

The previous prime is 999990319. The next prime is 999990347. The reversal of 999990332 is 233099999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055483 + ... + 1056429.

It is an arithmetic number, because the mean of its divisors is an integer number (40373424).

Almost surely, 2^999990332 is an apocalyptic number.

It is an amenable number.

999990332 is a deficient number, since it is larger than the sum of its proper divisors (937934020).

999990332 is a wasteful number, since it uses less digits than its factorization.

999990332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 53.

The square root of 999990332 is about 31622.6237368122. The cubic root of 999990332 is about 999.9967773229.

The spelling of 999990332 in words is "nine hundred ninety-nine million, nine hundred ninety thousand, three hundred thirty-two".