109387915 has 32 divisors (see below), whose sum is σ = 165344256. Its totient is φ = 67616640.

The previous prime is 109387909. The next prime is 109387939. The reversal of 109387915 is 519783901.

It is not a de Polignac number, because 109387915 - 2⁹ = 109387403 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16770 + ... + 22360.

It is an arithmetic number, because the mean of its divisors is an integer number (5167008).

Almost surely, 2^109387915 is an apocalyptic number.

109387915 is a deficient number, since it is larger than the sum of its proper divisors (55956341).

109387915 is a wasteful number, since it uses less digits than its factorization.

109387915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 109387915 is about 10458.8677685493. The cubic root of 109387915 is about 478.2516181951.

The spelling of 109387915 in words is "one hundred nine million, three hundred eighty-seven thousand, nine hundred fifteen".