990373503 has 16 divisors (see below), whose sum is σ = 1510352640. Its totient is φ = 565473216.

The previous prime is 990373481. The next prime is 990373511. The reversal of 990373503 is 305373099.

It is a happy number.

It is not a de Polignac number, because 990373503 - 2²⁸ = 721938047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990373303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8776 + ... + 45362.

It is an arithmetic number, because the mean of its divisors is an integer number (94397040).

Almost surely, 2^990373503 is an apocalyptic number.

990373503 is a deficient number, since it is larger than the sum of its proper divisors (519979137).

990373503 is a wasteful number, since it uses less digits than its factorization.

990373503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37886.

The product of its (nonzero) digits is 76545, while the sum is 39.

The square root of 990373503 is about 31470.2002376852. The cubic root of 990373503 is about 996.7808156390.

The spelling of 990373503 in words is "nine hundred ninety million, three hundred seventy-three thousand, five hundred three".