22891109 has 4 divisors (see below), whose sum is σ = 22915200. Its totient is φ = 22867020.

The previous prime is 22891097. The next prime is 22891111. The reversal of 22891109 is 90119822.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 22891109 - 2⁸ = 22890853 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 (22891189) 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, 10559 + ... + 12540.

It is an arithmetic number, because the mean of its divisors is an integer number (5728800).

Almost surely, 2^22891109 is an apocalyptic number.

It is an amenable number.

22891109 is a deficient number, since it is larger than the sum of its proper divisors (24091).

22891109 is an equidigital number, since it uses as much as digits as its factorization.

22891109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24090.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 22891109 is about 4784.4653828824. The cubic root of 22891109 is about 283.9371885492.

The spelling of 22891109 in words is "twenty-two million, eight hundred ninety-one thousand, one hundred nine".