989898764 has 12 divisors (see below), whose sum is σ = 1732570224. Its totient is φ = 494878704.

The previous prime is 989898739. The next prime is 989898781. The reversal of 989898764 is 467898989.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 989898694 and 989898703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25634 + ... + 51350.

It is an arithmetic number, because the mean of its divisors is an integer number (144380852).

Almost surely, 2^989898764 is an apocalyptic number.

It is an amenable number.

989898764 is a deficient number, since it is larger than the sum of its proper divisors (742671460).

989898764 is a wasteful number, since it uses less digits than its factorization.

989898764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35344 (or 35342 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 68.

The square root of 989898764 is about 31462.6566583307. The cubic root of 989898764 is about 996.6215200608.

The spelling of 989898764 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, seven hundred sixty-four".