22629439 has 4 divisors (see below), whose sum is σ = 25862224. Its totient is φ = 19396656.

The previous prime is 22629433. The next prime is 22629449. The reversal of 22629439 is 93492622.

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 22629439 - 2⁹ = 22628927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22629398 and 22629407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22629433) 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, 1616382 + ... + 1616395.

It is an arithmetic number, because the mean of its divisors is an integer number (6465556).

Almost surely, 2^22629439 is an apocalyptic number.

22629439 is a deficient number, since it is larger than the sum of its proper divisors (3232785).

22629439 is an equidigital number, since it uses as much as digits as its factorization.

22629439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232784.

The product of its digits is 46656, while the sum is 37.

The square root of 22629439 is about 4757.0409920454. The cubic root of 22629439 is about 282.8511372321.

The spelling of 22629439 in words is "twenty-two million, six hundred twenty-nine thousand, four hundred thirty-nine".