109991937 has 32 divisors (see below), whose sum is σ = 167362560. Its totient is φ = 63648000.

The previous prime is 109991933. The next prime is 109991977. The reversal of 109991937 is 739199901.

It is not a de Polignac number, because 109991937 - 2² = 109991933 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109991933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80137 + ... + 81497.

It is an arithmetic number, because the mean of its divisors is an integer number (5230080).

Almost surely, 2^109991937 is an apocalyptic number.

It is an amenable number.

109991937 is a deficient number, since it is larger than the sum of its proper divisors (57370623).

109991937 is a wasteful number, since it uses less digits than its factorization.

109991937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 137781, while the sum is 48.

The square root of 109991937 is about 10487.7040862145. The cubic root of 109991937 is about 479.1302783844.

The spelling of 109991937 in words is "one hundred nine million, nine hundred ninety-one thousand, nine hundred thirty-seven".