109817969 has 4 divisors (see below), whose sum is σ = 109892160. Its totient is φ = 109743780.

The previous prime is 109817963. The next prime is 109817987. The reversal of 109817969 is 969718901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 969718901 = 21107 ⋅45943.

It is a cyclic number.

It is not a de Polignac number, because 109817969 - 2⁸ = 109817713 is a prime.

It is a super-2 number, since 2×109817969² = 24119972630569922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109817963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34829 + ... + 37850.

It is an arithmetic number, because the mean of its divisors is an integer number (27473040).

Almost surely, 2^109817969 is an apocalyptic number.

It is an amenable number.

109817969 is a deficient number, since it is larger than the sum of its proper divisors (74191).

109817969 is an equidigital number, since it uses as much as digits as its factorization.

109817969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74190.

The product of its (nonzero) digits is 244944, while the sum is 50.

The square root of 109817969 is about 10479.4069011562. The cubic root of 109817969 is about 478.8775407072.

The spelling of 109817969 in words is "one hundred nine million, eight hundred seventeen thousand, nine hundred sixty-nine".