985531904 has 120 divisors (see below), whose sum is σ = 2314246968. Its totient is φ = 418037760.

The previous prime is 985531847. The next prime is 985531907. The reversal of 985531904 is 409135589.

It is a happy number.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 985531904 = 320³ + 984³ = 716³ + 852³.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985531907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4089224 + ... + 4089464.

Almost surely, 2^985531904 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 985531904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157123484).

985531904 is an abundant number, since it is smaller than the sum of its proper divisors (1328715064).

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

985531904 is a wasteful number, since it uses less digits than its factorization.

985531904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 413 counting only the distinct ones).

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

The square root of 985531904 is about 31393.1824446009. The cubic root of 985531904 is about 995.1538541411.

The spelling of 985531904 in words is "nine hundred eighty-five million, five hundred thirty-one thousand, nine hundred four".