22639343 has 4 divisors (see below), whose sum is σ = 23420040. Its totient is φ = 21858648.

The previous prime is 22639333. The next prime is 22639349. The reversal of 22639343 is 34393622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34393622 = 2 ⋅17196811.

It is a cyclic number.

It is not a de Polignac number, because 22639343 - 2¹⁴ = 22622959 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 (22639349) 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, 390305 + ... + 390362.

It is an arithmetic number, because the mean of its divisors is an integer number (5855010).

Almost surely, 2^22639343 is an apocalyptic number.

22639343 is a deficient number, since it is larger than the sum of its proper divisors (780697).

22639343 is an equidigital number, since it uses as much as digits as its factorization.

22639343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780696.

The product of its digits is 23328, while the sum is 32.

The square root of 22639343 is about 4758.0818614227. The cubic root of 22639343 is about 282.8923954221.

The spelling of 22639343 in words is "twenty-two million, six hundred thirty-nine thousand, three hundred forty-three".