22985409 has 4 divisors (see below), whose sum is σ = 30647216. Its totient is φ = 15323604.

The previous prime is 22985401. The next prime is 22985423. The reversal of 22985409 is 90458922.

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 not a de Polignac number, because 22985409 - 2³ = 22985401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22985401) 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, 3830899 + ... + 3830904.

It is an arithmetic number, because the mean of its divisors is an integer number (7661804).

Almost surely, 2^22985409 is an apocalyptic number.

It is an amenable number.

22985409 is a deficient number, since it is larger than the sum of its proper divisors (7661807).

22985409 is an equidigital number, since it uses as much as digits as its factorization.

22985409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661806.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 22985409 is about 4794.3100650667. The cubic root of 22985409 is about 284.3265477810.

The spelling of 22985409 in words is "twenty-two million, nine hundred eighty-five thousand, four hundred nine".