985139904 has 140 divisors (see below), whose sum is σ = 3042177304. Its totient is φ = 281336832.

The previous prime is 985139899. The next prime is 985139941. The reversal of 985139904 is 409931589.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 459924 + ... + 462060.

Almost surely, 2^985139904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985139904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521088652).

985139904 is an abundant number, since it is smaller than the sum of its proper divisors (2057037400).

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

985139904 is an equidigital number, since it uses as much as digits as its factorization.

985139904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 985139904 is about 31386.9384298628. The cubic root of 985139904 is about 995.0218942515.

The spelling of 985139904 in words is "nine hundred eighty-five million, one hundred thirty-nine thousand, nine hundred four".