985400 has 48 divisors (see below), whose sum is σ = 2473800. Its totient is φ = 362880.

The previous prime is 985399. The next prime is 985403. The reversal of 985400 is 4589.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 985400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985403) 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, 2411 + ... + 2789.

2⁹⁸⁵⁴⁰⁰ 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 985400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236900).

985400 is an abundant number, since it is smaller than the sum of its proper divisors (1488400).

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

985400 is a wasteful number, since it uses less digits than its factorization.

985400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 985400 is about 992.6731586983. The cubic root of 985400 is about 99.5109454892.

Adding to 985400 its reverse (4589), we get a palindrome (989989).

The spelling of 985400 in words is "nine hundred eighty-five thousand, four hundred".