22195409 has 4 divisors (see below), whose sum is σ = 22370304. Its totient is φ = 22020516.

The previous prime is 22195403. The next prime is 22195447. The reversal of 22195409 is 90459122.

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 22195409 - 2²⁰ = 21146833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22195403) 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, 87257 + ... + 87510.

It is an arithmetic number, because the mean of its divisors is an integer number (5592576).

Almost surely, 2^22195409 is an apocalyptic number.

It is an amenable number.

22195409 is a deficient number, since it is larger than the sum of its proper divisors (174895).

22195409 is a wasteful number, since it uses less digits than its factorization.

22195409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174894.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 22195409 is about 4711.2003778230. The cubic root of 22195409 is about 281.0311005204.

The spelling of 22195409 in words is "twenty-two million, one hundred ninety-five thousand, four hundred nine".