109937691 has 12 divisors (see below), whose sum is σ = 168140232. Its totient is φ = 68980416.

The previous prime is 109937669. The next prime is 109937717. The reversal of 109937691 is 196739901.

It is not a de Polignac number, because 109937691 - 2¹⁰ = 109936667 is a prime.

It is a super-2 number, since 2×109937691² = 24172591804822962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109937651) 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, 359121 + ... + 359426.

It is an arithmetic number, because the mean of its divisors is an integer number (14011686).

Almost surely, 2^109937691 is an apocalyptic number.

109937691 is a deficient number, since it is larger than the sum of its proper divisors (58202541).

109937691 is a wasteful number, since it uses less digits than its factorization.

109937691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718570 (or 718567 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 109937691 is about 10485.1175959071. The cubic root of 109937691 is about 479.0514993523.

The spelling of 109937691 in words is "one hundred nine million, nine hundred thirty-seven thousand, six hundred ninety-one".