22203949 has 2 divisors, whose sum is σ = 22203950. Its totient is φ = 22203948.

The previous prime is 22203943. The next prime is 22203971. The reversal of 22203949 is 94930222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 3928324 = 4275^2 + 1982^2 .

It is a cyclic number.

It is not a de Polignac number, because 22203949 - 2¹⁷ = 22072877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22203949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22203943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101974 + 11101975.

It is an arithmetic number, because the mean of its divisors is an integer number (11101975).

Almost surely, 2^22203949 is an apocalyptic number.

It is an amenable number.

22203949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22203949 is an equidigital number, since it uses as much as digits as its factorization.

22203949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 22203949 is about 4712.1066414079. The cubic root of 22203949 is about 281.0671394726.

The spelling of 22203949 in words is "twenty-two million, two hundred three thousand, nine hundred forty-nine".