109928569 has 4 divisors (see below), whose sum is σ = 114708096. Its totient is φ = 105149044.

The previous prime is 109928549. The next prime is 109928587. The reversal of 109928569 is 965829901.

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: 965829901 = 257 ⋅3758093.

It is a cyclic number.

It is not a de Polignac number, because 109928569 - 2⁹ = 109928057 is a prime.

It is a super-2 number, since 2×109928569² = 24168580564775522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109928549) 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, 2389729 + ... + 2389774.

It is an arithmetic number, because the mean of its divisors is an integer number (28677024).

Almost surely, 2^109928569 is an apocalyptic number.

It is an amenable number.

109928569 is a deficient number, since it is larger than the sum of its proper divisors (4779527).

109928569 is an equidigital number, since it uses as much as digits as its factorization.

109928569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779526.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 109928569 is about 10484.6825893777. The cubic root of 109928569 is about 479.0382493358.

The spelling of 109928569 in words is "one hundred nine million, nine hundred twenty-eight thousand, five hundred sixty-nine".