990385235 has 32 divisors (see below), whose sum is σ = 1487756160. Its totient is φ = 617121792.

The previous prime is 990385219. The next prime is 990385247. The reversal of 990385235 is 532583099.

It is not a de Polignac number, because 990385235 - 2⁴ = 990385219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11444 + ... + 45953.

It is an arithmetic number, because the mean of its divisors is an integer number (46492380).

Almost surely, 2^990385235 is an apocalyptic number.

990385235 is a deficient number, since it is larger than the sum of its proper divisors (497370925).

990385235 is a wasteful number, since it uses less digits than its factorization.

990385235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57455.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 990385235 is about 31470.3866356929. The cubic root of 990385235 is about 996.7847515906.

The spelling of 990385235 in words is "nine hundred ninety million, three hundred eighty-five thousand, two hundred thirty-five".