989992003 has 32 divisors (see below), whose sum is σ = 1339107840. Its totient is φ = 706786560.

The previous prime is 989991953. The next prime is 989992043. The reversal of 989992003 is 300299989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989992003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989992043) 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 31 ways as a sum of consecutive naturals, for example, 133528 + ... + 140746.

It is an arithmetic number, because the mean of its divisors is an integer number (41847120).

Almost surely, 2^989992003 is an apocalyptic number.

989992003 is a deficient number, since it is larger than the sum of its proper divisors (349115837).

989992003 is a wasteful number, since it uses less digits than its factorization.

989992003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 989992003 is about 31464.1383641758. The cubic root of 989992003 is about 996.6528098182.

The spelling of 989992003 in words is "nine hundred eighty-nine million, nine hundred ninety-two thousand, three".