990357 has 16 divisors (see below), whose sum is σ = 1425408. Its totient is φ = 609840.

The previous prime is 990349. The next prime is 990359. The reversal of 990357 is 753099.

It is not a de Polignac number, because 990357 - 2³ = 990349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990359) 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 15 ways as a sum of consecutive naturals, for example, 1908 + ... + 2370.

It is an arithmetic number, because the mean of its divisors is an integer number (89088).

2⁹⁹⁰³⁵⁷ is an apocalyptic number.

It is an amenable number.

990357 is a deficient number, since it is larger than the sum of its proper divisors (435051).

990357 is a wasteful number, since it uses less digits than its factorization.

990357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 990357 is about 995.1668201864. The cubic root of 990357 is about 99.6775279019.

The spelling of 990357 in words is "nine hundred ninety thousand, three hundred fifty-seven".