989898964 has 12 divisors (see below), whose sum is σ = 1732652404. Its totient is φ = 494855424.

The previous prime is 989898941. The next prime is 989898983. The reversal of 989898964 is 469898989.

It can be written as a sum of positive squares in 2 ways, for example, as 166668100 + 823230864 = 12910^2 + 28692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 989898893 and 989898902.

It is a congruent number.

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, 3652 + ... + 44644.

Almost surely, 2^989898964 is an apocalyptic number.

It is an amenable number.

989898964 is a deficient number, since it is larger than the sum of its proper divisors (742753440).

989898964 is a wasteful number, since it uses less digits than its factorization.

989898964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47034 (or 47032 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 70.

The square root of 989898964 is about 31462.6598367017. The cubic root of 989898964 is about 996.6215871802.

The spelling of 989898964 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-four".