985509384 has 16 divisors (see below), whose sum is σ = 2463773520. Its totient is φ = 328503120.

The previous prime is 985509383. The next prime is 985509409. The reversal of 985509384 is 483905589.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (985509383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20531422 + ... + 20531469.

It is an arithmetic number, because the mean of its divisors is an integer number (153985845).

Almost surely, 2^985509384 is an apocalyptic number.

It is an amenable number.

985509384 is an abundant number, since it is smaller than the sum of its proper divisors (1478264136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985509384 is a wasteful number, since it uses less digits than its factorization.

985509384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41062900 (or 41062896 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 985509384 is about 31392.8237659501. The cubic root of 985509384 is about 995.1462741276.

The spelling of 985509384 in words is "nine hundred eighty-five million, five hundred nine thousand, three hundred eighty-four".