107989191 has 12 divisors (see below), whose sum is σ = 156245232. Its totient is φ = 71872416.

The previous prime is 107989187. The next prime is 107989201. The reversal of 107989191 is 191989701.

It is not a de Polignac number, because 107989191 - 2² = 107989187 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107989111) 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, 4171 + ... + 15276.

It is an arithmetic number, because the mean of its divisors is an integer number (13020436).

Almost surely, 2^107989191 is an apocalyptic number.

107989191 is a deficient number, since it is larger than the sum of its proper divisors (48256041).

107989191 is a wasteful number, since it uses less digits than its factorization.

107989191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20070 (or 20067 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 45.

The square root of 107989191 is about 10391.7847841456. The cubic root of 107989191 is about 476.2044278216.

The spelling of 107989191 in words is "one hundred seven million, nine hundred eighty-nine thousand, one hundred ninety-one".