109387917 has 12 divisors (see below), whose sum is σ = 158352064. Its totient is φ = 72765000.

The previous prime is 109387909. The next prime is 109387939. The reversal of 109387917 is 719783901.

It is not a de Polignac number, because 109387917 - 2³ = 109387909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109387987) 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, 8959 + ... + 17292.

Almost surely, 2^109387917 is an apocalyptic number.

It is an amenable number.

109387917 is a deficient number, since it is larger than the sum of its proper divisors (48964147).

109387917 is a wasteful number, since it uses less digits than its factorization.

109387917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26720 (or 26717 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 109387917 is about 10458.8678641620. The cubic root of 109387917 is about 478.2516211098.

The spelling of 109387917 in words is "one hundred nine million, three hundred eighty-seven thousand, nine hundred seventeen".