22468009 has 4 divisors (see below), whose sum is σ = 22539204. Its totient is φ = 22396816.

The previous prime is 22467989. The next prime is 22468027. The reversal of 22468009 is 90086422.

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 12981609 + 9486400 = 3603^2 + 3080^2 .

It is a cyclic number.

It is not a de Polignac number, because 22468009 - 2⁷ = 22467881 is a prime.

It is a super-2 number, since 2×22468009² = 1009622856848162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22468049) 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, 35122 + ... + 35755.

It is an arithmetic number, because the mean of its divisors is an integer number (5634801).

Almost surely, 2^22468009 is an apocalyptic number.

It is an amenable number.

22468009 is a deficient number, since it is larger than the sum of its proper divisors (71195).

22468009 is an equidigital number, since it uses as much as digits as its factorization.

22468009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71194.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22468009 is about 4740.0431432636. The cubic root of 22468009 is about 282.1769466078.

The spelling of 22468009 in words is "twenty-two million, four hundred sixty-eight thousand, nine".