985834440 has 96 divisors (see below), whose sum is σ = 3212422200. Its totient is φ = 262195200.

The previous prime is 985834433. The next prime is 985834453. The reversal of 985834440 is 44438589.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 976062564 + 9771876 = 31242^2 + 3126^2 .

It is a super-2 number, since 2×985834440² = 1943739086180227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140946 + ... + 147774.

Almost surely, 2^985834440 is an apocalyptic number.

985834440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985834440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606211100).

985834440 is an abundant number, since it is smaller than the sum of its proper divisors (2226587760).

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

985834440 is a wasteful number, since it uses less digits than its factorization.

985834440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247 (or 7240 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 985834440 is about 31398.0005732849. Note that the first 3 decimals coincide. The cubic root of 985834440 is about 995.2556736301.

The spelling of 985834440 in words is "nine hundred eighty-five million, eight hundred thirty-four thousand, four hundred forty".