989853690 has 64 divisors (see below), whose sum is σ = 2741446656. Its totient is φ = 224050752.

The previous prime is 989853677. The next prime is 989853701. The reversal of 989853690 is 96358989.

It is a super-2 number, since 2×989853690² = 1959620655213232200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 989853690.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1252 + ... + 44511.

It is an arithmetic number, because the mean of its divisors is an integer number (42835104).

Almost surely, 2^989853690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989853690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370723328).

989853690 is an abundant number, since it is smaller than the sum of its proper divisors (1751592966).

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

989853690 is a wasteful number, since it uses less digits than its factorization.

989853690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45883.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 989853690 is about 31461.9403406719. The cubic root of 989853690 is about 996.6063931266.

The spelling of 989853690 in words is "nine hundred eighty-nine million, eight hundred fifty-three thousand, six hundred ninety".