985439 has 24 divisors (see below), whose sum is σ = 1317600. Its totient is φ = 733824.

The previous prime is 985433. The next prime is 985447. The reversal of 985439 is 934589.

It is not a de Polignac number, because 985439 - 2¹⁶ = 919903 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985433) 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, 57959 + ... + 57975.

It is an arithmetic number, because the mean of its divisors is an integer number (54900).

2⁹⁸⁵⁴³⁹ is an apocalyptic number.

985439 is a deficient number, since it is larger than the sum of its proper divisors (332161).

985439 is a wasteful number, since it uses less digits than its factorization.

985439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 37 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 985439 is about 992.6928024319. The cubic root of 985439 is about 99.5122582812.

The spelling of 985439 in words is "nine hundred eighty-five thousand, four hundred thirty-nine".