22345409 has 4 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 22326660.

The previous prime is 22345403. The next prime is 22345441. The reversal of 22345409 is 90454322.

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 22345409 - 2⁸ = 22345153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22345403) 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, 7457 + ... + 10014.

It is an arithmetic number, because the mean of its divisors is an integer number (5591040).

Almost surely, 2^22345409 is an apocalyptic number.

It is an amenable number.

22345409 is a deficient number, since it is larger than the sum of its proper divisors (18751).

22345409 is a wasteful number, since it uses less digits than its factorization.

22345409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18750.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22345409 is about 4727.0930813768. The cubic root of 22345409 is about 281.6627635435.

The spelling of 22345409 in words is "twenty-two million, three hundred forty-five thousand, four hundred nine".