22438039 has 4 divisors (see below), whose sum is σ = 24164056. Its totient is φ = 20712024.

The previous prime is 22438033. The next prime is 22438049. The reversal of 22438039 is 93083422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93083422 = 2 ⋅46541711.

It is a cyclic number.

It is not a de Polignac number, because 22438039 - 2⁷ = 22437911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22438039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438033) 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, 862989 + ... + 863014.

It is an arithmetic number, because the mean of its divisors is an integer number (6041014).

Almost surely, 2^22438039 is an apocalyptic number.

22438039 is a deficient number, since it is larger than the sum of its proper divisors (1726017).

22438039 is a wasteful number, since it uses less digits than its factorization.

22438039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726016.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22438039 is about 4736.8807246964. The cubic root of 22438039 is about 282.0514258275.

The spelling of 22438039 in words is "twenty-two million, four hundred thirty-eight thousand, thirty-nine".