990803803 has 16 divisors (see below), whose sum is σ = 1128314880. Its totient is φ = 861854400.

The previous prime is 990803791. The next prime is 990803833. The reversal of 990803803 is 308308099.

It is a de Polignac number, because none of the positive numbers 2^k-990803803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990803833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14026 + ... + 46672.

It is an arithmetic number, because the mean of its divisors is an integer number (70519680).

Almost surely, 2^990803803 is an apocalyptic number.

990803803 is a deficient number, since it is larger than the sum of its proper divisors (137511077).

990803803 is a wasteful number, since it uses less digits than its factorization.

990803803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32778.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 990803803 is about 31477.0361215919. The cubic root of 990803803 is about 996.9251560251.

The spelling of 990803803 in words is "nine hundred ninety million, eight hundred three thousand, eight hundred three".