22389937 has 2 divisors, whose sum is σ = 22389938. Its totient is φ = 22389936.

The previous prime is 22389931. The next prime is 22389959. The reversal of 22389937 is 73998322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14318656 + 8071281 = 3784^2 + 2841^2 .

It is a cyclic number.

It is not a de Polignac number, because 22389937 - 2³ = 22389929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22389893 and 22389902.

It is not a weakly prime, because it can be changed into another prime (22389931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11194968 + 11194969.

It is an arithmetic number, because the mean of its divisors is an integer number (11194969).

Almost surely, 2^22389937 is an apocalyptic number.

It is an amenable number.

22389937 is a deficient number, since it is larger than the sum of its proper divisors (1).

22389937 is an equidigital number, since it uses as much as digits as its factorization.

22389937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 22389937 is about 4731.8006086478. The cubic root of 22389937 is about 281.8497304794.

The spelling of 22389937 in words is "twenty-two million, three hundred eighty-nine thousand, nine hundred thirty-seven".