22242239 has 4 divisors (see below), whose sum is σ = 23550624. Its totient is φ = 20933856.

The previous prime is 22242211. The next prime is 22242251. The reversal of 22242239 is 93224222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22242239 - 2¹² = 22238143 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 (22242289) 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, 654167 + ... + 654200.

It is an arithmetic number, because the mean of its divisors is an integer number (5887656).

Almost surely, 2^22242239 is an apocalyptic number.

22242239 is a deficient number, since it is larger than the sum of its proper divisors (1308385).

22242239 is a wasteful number, since it uses less digits than its factorization.

22242239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308384.

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

The square root of 22242239 is about 4716.1678299229. The cubic root of 22242239 is about 281.2286104556.

The spelling of 22242239 in words is "twenty-two million, two hundred forty-two thousand, two hundred thirty-nine".