319487990 has 16 divisors (see below), whose sum is σ = 589105440. Its totient is φ = 124678080.

The previous prime is 319487989. The next prime is 319488011. The reversal of 319487990 is 99784913.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 389210 + ... + 390029.

It is an arithmetic number, because the mean of its divisors is an integer number (36819090).

Almost surely, 2^319487990 is an apocalyptic number.

319487990 is a deficient number, since it is larger than the sum of its proper divisors (269617450).

319487990 is a wasteful number, since it uses less digits than its factorization.

319487990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779287.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 319487990 is about 17874.2269762919. The cubic root of 319487990 is about 683.6253819392.

The spelling of 319487990 in words is "three hundred nineteen million, four hundred eighty-seven thousand, nine hundred ninety".