22238639 has 2 divisors, whose sum is σ = 22238640. Its totient is φ = 22238638.

The previous prime is 22238617. The next prime is 22238663. The reversal of 22238639 is 93683222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22238639 - 2⁸ = 22238383 is a prime.

It is a super-3 number, since 3×22238639³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22238599 and 22238608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22238609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11119319 + 11119320.

It is an arithmetic number, because the mean of its divisors is an integer number (11119320).

Almost surely, 2^22238639 is an apocalyptic number.

22238639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22238639 is an equidigital number, since it uses as much as digits as its factorization.

22238639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 22238639 is about 4715.7861486713. The cubic root of 22238639 is about 281.2134369589.

The spelling of 22238639 in words is "twenty-two million, two hundred thirty-eight thousand, six hundred thirty-nine".