985440 has 48 divisors (see below), whose sum is σ = 3105648. Its totient is φ = 262656.

The previous prime is 985433. The next prime is 985447. The reversal of 985440 is 44589.

It is an interprime number because it is at equal distance from previous prime (985433) and next prime (985447).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 985398 and 985407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985447) by changing a digit.

985440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (64701).

2⁹⁸⁵⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

985440 is an abundant number, since it is smaller than the sum of its proper divisors (2120208).

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

985440 is a wasteful number, since it uses less digits than its factorization.

985440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2063 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 985440 is about 992.6933061122. The cubic root of 985440 is about 99.5122919420.

The spelling of 985440 in words is "nine hundred eighty-five thousand, four hundred forty".