22340389 has 2 divisors, whose sum is σ = 22340390. Its totient is φ = 22340388.

The previous prime is 22340387. The next prime is 22340393. The reversal of 22340389 is 98304322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 4235364 = 4255^2 + 2058^2 .

It is a cyclic number.

It is not a de Polignac number, because 22340389 - 2¹ = 22340387 is a prime.

Together with 22340387, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22340389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22340387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11170194 + 11170195.

It is an arithmetic number, because the mean of its divisors is an integer number (11170195).

Almost surely, 2^22340389 is an apocalyptic number.

It is an amenable number.

22340389 is a deficient number, since it is larger than the sum of its proper divisors (1).

22340389 is an equidigital number, since it uses as much as digits as its factorization.

22340389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22340389 is about 4726.5620698347. The cubic root of 22340389 is about 281.6416696808.

The spelling of 22340389 in words is "twenty-two million, three hundred forty thousand, three hundred eighty-nine".