985431199 has 6 divisors (see below), whose sum is σ = 987369656. Its totient is φ = 983496360.

The previous prime is 985431191. The next prime is 985431203. The reversal of 985431199 is 991134589.

It is not a de Polignac number, because 985431199 - 2³ = 985431191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985431191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425254 + ... + 427564.

Almost surely, 2^985431199 is an apocalyptic number.

985431199 is a deficient number, since it is larger than the sum of its proper divisors (1938457).

985431199 is an frugal number, since it uses more digits than its factorization.

985431199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617 (or 2964 counting only the distinct ones).

The product of its digits is 349920, while the sum is 49.

The square root of 985431199 is about 31391.5784725776. The cubic root of 985431199 is about 995.1199569186.

The spelling of 985431199 in words is "nine hundred eighty-five million, four hundred thirty-one thousand, one hundred ninety-nine".