989699109 has 12 divisors (see below), whose sum is σ = 1535043744. Its totient is φ = 565542264.

The previous prime is 989699093. The next prime is 989699111. The reversal of 989699109 is 901996989.

It is not a de Polignac number, because 989699109 - 2⁴ = 989699093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989699129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3366177 + ... + 3366470.

It is an arithmetic number, because the mean of its divisors is an integer number (127920312).

Almost surely, 2^989699109 is an apocalyptic number.

It is an amenable number.

989699109 is a deficient number, since it is larger than the sum of its proper divisors (545344635).

989699109 is a wasteful number, since it uses less digits than its factorization.

989699109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732664 (or 6732657 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 60.

The square root of 989699109 is about 31459.4836098751. The cubic root of 989699109 is about 996.5545119127.

The spelling of 989699109 in words is "nine hundred eighty-nine million, six hundred ninety-nine thousand, one hundred nine".