109418869 has 4 divisors (see below), whose sum is σ = 125050144. Its totient is φ = 93787596.

The previous prime is 109418861. The next prime is 109418893. The reversal of 109418869 is 968814901.

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.

It is not a de Polignac number, because 109418869 - 2³ = 109418861 is a prime.

It is a super-2 number, since 2×109418869² = 23944977786478322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109418861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7815627 + ... + 7815640.

It is an arithmetic number, because the mean of its divisors is an integer number (31262536).

Almost surely, 2^109418869 is an apocalyptic number.

It is an amenable number.

109418869 is a deficient number, since it is larger than the sum of its proper divisors (15631275).

109418869 is an equidigital number, since it uses as much as digits as its factorization.

109418869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631274.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 109418869 is about 10460.3474607682. The cubic root of 109418869 is about 478.2967249586.

The spelling of 109418869 in words is "one hundred nine million, four hundred eighteen thousand, eight hundred sixty-nine".