22809643 has 2 divisors, whose sum is σ = 22809644. Its totient is φ = 22809642.

The previous prime is 22809637. The next prime is 22809697. The reversal of 22809643 is 34690822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22809643 - 2¹³ = 22801451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22809599 and 22809608.

It is not a weakly prime, because it can be changed into another prime (22809623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11404821 + 11404822.

It is an arithmetic number, because the mean of its divisors is an integer number (11404822).

Almost surely, 2^22809643 is an apocalyptic number.

22809643 is a deficient number, since it is larger than the sum of its proper divisors (1).

22809643 is an equidigital number, since it uses as much as digits as its factorization.

22809643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22809643 is about 4775.9441998415. The cubic root of 22809643 is about 283.5999583235.

The spelling of 22809643 in words is "twenty-two million, eight hundred nine thousand, six hundred forty-three".