22242949 has 2 divisors, whose sum is σ = 22242950. Its totient is φ = 22242948.

The previous prime is 22242947. The next prime is 22242959. The reversal of 22242949 is 94924222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18122049 + 4120900 = 4257^2 + 2030^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242949 - 2¹ = 22242947 is a prime.

Together with 22242947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22242943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121474 + 11121475.

It is an arithmetic number, because the mean of its divisors is an integer number (11121475).

Almost surely, 2^22242949 is an apocalyptic number.

It is an amenable number.

22242949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242949 is an equidigital number, since it uses as much as digits as its factorization.

22242949 is an evil number, because the sum of its binary digits is even.

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

The square root of 22242949 is about 4716.2431023008. The cubic root of 22242949 is about 281.2316028131.

The spelling of 22242949 in words is "twenty-two million, two hundred forty-two thousand, nine hundred forty-nine".