22901789 has 2 divisors, whose sum is σ = 22901790. Its totient is φ = 22901788.

The previous prime is 22901773. The next prime is 22901819. The reversal of 22901789 is 98710922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 2199289 = 4550^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 22901789 - 2⁴ = 22901773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22901719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11450894 + 11450895.

It is an arithmetic number, because the mean of its divisors is an integer number (11450895).

Almost surely, 2^22901789 is an apocalyptic number.

It is an amenable number.

22901789 is a deficient number, since it is larger than the sum of its proper divisors (1).

22901789 is an equidigital number, since it uses as much as digits as its factorization.

22901789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 22901789 is about 4785.5813648918. The cubic root of 22901789 is about 283.9813392817.

It can be divided in two parts, 2290178 and 9, that multiplied together give a palindrome (20611602).

The spelling of 22901789 in words is "twenty-two million, nine hundred one thousand, seven hundred eighty-nine".