109975991 has 8 divisors (see below), whose sum is σ = 111265920. Its totient is φ = 108691128.

The previous prime is 109975967. The next prime is 109975997. The reversal of 109975991 is 199579901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109975991 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 (109975997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57590 + ... + 59468.

It is an arithmetic number, because the mean of its divisors is an integer number (13908240).

Almost surely, 2^109975991 is an apocalyptic number.

109975991 is a deficient number, since it is larger than the sum of its proper divisors (1289929).

109975991 is a wasteful number, since it uses less digits than its factorization.

109975991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 229635, while the sum is 50.

The square root of 109975991 is about 10486.9438350742. The cubic root of 109975991 is about 479.1071234124.

The spelling of 109975991 in words is "one hundred nine million, nine hundred seventy-five thousand, nine hundred ninety-one".