223597949 has 2 divisors, whose sum is σ = 223597950. Its totient is φ = 223597948.

The previous prime is 223597939. The next prime is 223597981. The reversal of 223597949 is 949795322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111978724 + 111619225 = 10582^2 + 10565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223597949 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 223597897 and 223597906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223597939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111798974 + 111798975.

It is an arithmetic number, because the mean of its divisors is an integer number (111798975).

Almost surely, 2^223597949 is an apocalyptic number.

It is an amenable number.

223597949 is a deficient number, since it is larger than the sum of its proper divisors (1).

223597949 is an equidigital number, since it uses as much as digits as its factorization.

223597949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 223597949 is about 14953.1919334970. The cubic root of 223597949 is about 606.9542244964.

The spelling of 223597949 in words is "two hundred twenty-three million, five hundred ninety-seven thousand, nine hundred forty-nine".