22422239 has 4 divisors (see below), whose sum is σ = 25625424. Its totient is φ = 19219056.

The previous prime is 22422227. The next prime is 22422247. The reversal of 22422239 is 93222422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93222422 = 2 ⋅46611211.

It is a cyclic number.

It is not a de Polignac number, because 22422239 - 2⁸ = 22421983 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 (22422139) 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, 1601582 + ... + 1601595.

It is an arithmetic number, because the mean of its divisors is an integer number (6406356).

Almost surely, 2^22422239 is an apocalyptic number.

22422239 is a deficient number, since it is larger than the sum of its proper divisors (3203185).

22422239 is an equidigital number, since it uses as much as digits as its factorization.

22422239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203184.

The product of its digits is 3456, while the sum is 26.

The square root of 22422239 is about 4735.2126668187. The cubic root of 22422239 is about 281.9852070439.

The spelling of 22422239 in words is "twenty-two million, four hundred twenty-two thousand, two hundred thirty-nine".