22917109 has 4 divisors (see below), whose sum is σ = 23231116. Its totient is φ = 22603104.

The previous prime is 22917107. The next prime is 22917121. The reversal of 22917109 is 90171922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7535025 + 15382084 = 2745^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 22917109 - 2¹ = 22917107 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 (22917101) 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, 156894 + ... + 157039.

It is an arithmetic number, because the mean of its divisors is an integer number (5807779).

Almost surely, 2^22917109 is an apocalyptic number.

It is an amenable number.

22917109 is a deficient number, since it is larger than the sum of its proper divisors (314007).

22917109 is an equidigital number, since it uses as much as digits as its factorization.

22917109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314006.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 22917109 is about 4787.1817387686. The cubic root of 22917109 is about 284.0446476457.

The spelling of 22917109 in words is "twenty-two million, nine hundred seventeen thousand, one hundred nine".