985587399 has 24 divisors (see below), whose sum is σ = 1541038320. Its totient is φ = 622470096.

The previous prime is 985587377. The next prime is 985587413. The reversal of 985587399 is 993785589.

985587399 is a `hidden beast` number, since 9 + 8 + 558 + 73 + 9 + 9 = 666.

It is not a de Polignac number, because 985587399 - 2⁵ = 985587367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985587319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40812 + ... + 60305.

It is an arithmetic number, because the mean of its divisors is an integer number (64209930).

Almost surely, 2^985587399 is an apocalyptic number.

985587399 is a deficient number, since it is larger than the sum of its proper divisors (555450921).

985587399 is a wasteful number, since it uses less digits than its factorization.

985587399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101164 (or 101139 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The square root of 985587399 is about 31394.0663024082. The cubic root of 985587399 is about 995.1725327269.

The spelling of 985587399 in words is "nine hundred eighty-five million, five hundred eighty-seven thousand, three hundred ninety-nine".