22420249 has 2 divisors, whose sum is σ = 22420250. Its totient is φ = 22420248.

The previous prime is 22420241. The next prime is 22420259. The reversal of 22420249 is 94202422.

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., 21483225 + 937024 = 4635^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420249 - 2³ = 22420241 is a prime.

It is not a weakly prime, because it can be changed into another prime (22420241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210124 + 11210125.

It is an arithmetic number, because the mean of its divisors is an integer number (11210125).

Almost surely, 2^22420249 is an apocalyptic number.

It is an amenable number.

22420249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420249 is an equidigital number, since it uses as much as digits as its factorization.

22420249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 22420249 is about 4735.0025343182. The cubic root of 22420249 is about 281.9768646245.

The spelling of 22420249 in words is "twenty-two million, four hundred twenty thousand, two hundred forty-nine".