989475960 has 256 divisors, whose sum is σ = 3396556800. Its totient is φ = 228454400.

The previous prime is 989475857. The next prime is 989475983. The reversal of 989475960 is 69574989.

It is a self number, because there is not a number n which added to its sum of digits gives 989475960.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 1945 × 1927 × 264.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2543446 + ... + 2543834.

It is an arithmetic number, because the mean of its divisors is an integer number (13267800).

Almost surely, 2^989475960 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 989475960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698278400).

989475960 is an abundant number, since it is smaller than the sum of its proper divisors (2407080840).

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

989475960 is a wasteful number, since it uses less digits than its factorization.

989475960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 989475960 is about 31455.9368005469. The cubic root of 989475960 is about 996.4796080501.

The spelling of 989475960 in words is "nine hundred eighty-nine million, four hundred seventy-five thousand, nine hundred sixty".