22229947 has 2 divisors, whose sum is σ = 22229948. Its totient is φ = 22229946.

The previous prime is 22229939. The next prime is 22229959. The reversal of 22229947 is 74992222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22229947 - 2³ = 22229939 is a prime.

It is not a weakly prime, because it can be changed into another prime (22229927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11114973 + 11114974.

It is an arithmetic number, because the mean of its divisors is an integer number (11114974).

Almost surely, 2^22229947 is an apocalyptic number.

22229947 is a deficient number, since it is larger than the sum of its proper divisors (1).

22229947 is an equidigital number, since it uses as much as digits as its factorization.

22229947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 22229947 is about 4714.8644731318. The cubic root of 22229947 is about 281.1767946428.

The spelling of 22229947 in words is "twenty-two million, two hundred twenty-nine thousand, nine hundred forty-seven".