224638933 has 2 divisors, whose sum is σ = 224638934. Its totient is φ = 224638932.

The previous prime is 224638913. The next prime is 224638979. The reversal of 224638933 is 339836422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219247249 + 5391684 = 14807^2 + 2322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224638933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224638913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112319466 + 112319467.

It is an arithmetic number, because the mean of its divisors is an integer number (112319467).

Almost surely, 2^224638933 is an apocalyptic number.

It is an amenable number.

224638933 is a deficient number, since it is larger than the sum of its proper divisors (1).

224638933 is an equidigital number, since it uses as much as digits as its factorization.

224638933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 40.

The square root of 224638933 is about 14987.9596009597. The cubic root of 224638933 is about 607.8946798252.

It can be divided in two parts, 2246389 and 33, that added together give a palindrome (2246422).

The spelling of 224638933 in words is "two hundred twenty-four million, six hundred thirty-eight thousand, nine hundred thirty-three".