990597319 has 4 divisors (see below), whose sum is σ = 1042734040. Its totient is φ = 938460600.

The previous prime is 990597301. The next prime is 990597359. The reversal of 990597319 is 913795099.

990597319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990597319 - 2⁹ = 990596807 is a prime.

It is a super-2 number, since 2×990597319² = 1962566096819975522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990597359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26068332 + ... + 26068369.

It is an arithmetic number, because the mean of its divisors is an integer number (260683510).

Almost surely, 2^990597319 is an apocalyptic number.

990597319 is a deficient number, since it is larger than the sum of its proper divisors (52136721).

990597319 is a wasteful number, since it uses less digits than its factorization.

990597319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52136720.

The product of its (nonzero) digits is 688905, while the sum is 52.

The square root of 990597319 is about 31473.7560357832. The cubic root of 990597319 is about 996.8558979827.

The spelling of 990597319 in words is "nine hundred ninety million, five hundred ninety-seven thousand, three hundred nineteen".