989657107 has 16 divisors (see below), whose sum is σ = 1020872160. Its totient is φ = 959040000.

The previous prime is 989657099. The next prime is 989657111. The reversal of 989657107 is 701756989.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 989657107 - 2³ = 989657099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989657117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668603 + ... + 1669195.

It is an arithmetic number, because the mean of its divisors is an integer number (63804510).

Almost surely, 2^989657107 is an apocalyptic number.

989657107 is a deficient number, since it is larger than the sum of its proper divisors (31215053).

989657107 is a wasteful number, since it uses less digits than its factorization.

989657107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014.

The product of its (nonzero) digits is 952560, while the sum is 52.

The square root of 989657107 is about 31458.8160457446. The cubic root of 989657107 is about 996.5404140675.

The spelling of 989657107 in words is "nine hundred eighty-nine million, six hundred fifty-seven thousand, one hundred seven".