990312837 has 8 divisors (see below), whose sum is σ = 1320591360. Its totient is φ = 660121440.

The previous prime is 990312823. The next prime is 990312859. The reversal of 990312837 is 738213099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 990312837 - 2⁴ = 990312821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990312877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12412 + ... + 46202.

It is an arithmetic number, because the mean of its divisors is an integer number (165073920).

Almost surely, 2^990312837 is an apocalyptic number.

It is an amenable number.

990312837 is a deficient number, since it is larger than the sum of its proper divisors (330278523).

990312837 is a wasteful number, since it uses less digits than its factorization.

990312837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43563.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 990312837 is about 31469.2363587044. The cubic root of 990312837 is about 996.7604623953.

The spelling of 990312837 in words is "nine hundred ninety million, three hundred twelve thousand, eight hundred thirty-seven".