22065389 has 2 divisors, whose sum is σ = 22065390. Its totient is φ = 22065388.

The previous prime is 22065367. The next prime is 22065443. The reversal of 22065389 is 98356022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 209764 = 4675^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 22065389 - 2¹² = 22061293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22065359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11032694 + 11032695.

It is an arithmetic number, because the mean of its divisors is an integer number (11032695).

Almost surely, 2^22065389 is an apocalyptic number.

It is an amenable number.

22065389 is a deficient number, since it is larger than the sum of its proper divisors (1).

22065389 is an equidigital number, since it uses as much as digits as its factorization.

22065389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 22065389 is about 4697.3810788566. The cubic root of 22065389 is about 280.4812684028.

The spelling of 22065389 in words is "twenty-two million, sixty-five thousand, three hundred eighty-nine".