985590431 has 16 divisors (see below), whose sum is σ = 1160298048. Its totient is φ = 819590400.

The previous prime is 985590427. The next prime is 985590451. The reversal of 985590431 is 134095589.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 985590431 - 2² = 985590427 is a prime.

It is a super-2 number, since 2×985590431² = 1942776995357531522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985590451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42461 + ... + 61433.

It is an arithmetic number, because the mean of its divisors is an integer number (72518628).

Almost surely, 2^985590431 is an apocalyptic number.

985590431 is a deficient number, since it is larger than the sum of its proper divisors (174707617).

985590431 is a wasteful number, since it uses less digits than its factorization.

985590431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19202.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 985590431 is about 31394.1145917511. The cubic root of 985590431 is about 995.1735532215.

The spelling of 985590431 in words is "nine hundred eighty-five million, five hundred ninety thousand, four hundred thirty-one".