22355639 has 2 divisors, whose sum is σ = 22355640. Its totient is φ = 22355638.

The previous prime is 22355633. The next prime is 22355653. The reversal of 22355639 is 93655322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22355639 - 2⁴ = 22355623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22355599 and 22355608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22355633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11177819 + 11177820.

It is an arithmetic number, because the mean of its divisors is an integer number (11177820).

Almost surely, 2^22355639 is an apocalyptic number.

22355639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22355639 is an equidigital number, since it uses as much as digits as its factorization.

22355639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 35.

The square root of 22355639 is about 4728.1750179112. The cubic root of 22355639 is about 281.7057398654.

The spelling of 22355639 in words is "twenty-two million, three hundred fifty-five thousand, six hundred thirty-nine".