223149449 has 2 divisors, whose sum is σ = 223149450. Its totient is φ = 223149448.

The previous prime is 223149359. The next prime is 223149481. The reversal of 223149449 is 944941322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222457225 + 692224 = 14915^2 + 832^2 .

It is a cyclic number.

It is not a de Polignac number, because 223149449 - 2²⁴ = 206372233 is a prime.

It is a super-3 number, since 3×223149449³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223149499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111574724 + 111574725.

It is an arithmetic number, because the mean of its divisors is an integer number (111574725).

Almost surely, 2^223149449 is an apocalyptic number.

It is an amenable number.

223149449 is a deficient number, since it is larger than the sum of its proper divisors (1).

223149449 is an equidigital number, since it uses as much as digits as its factorization.

223149449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 223149449 is about 14938.1876076049. The cubic root of 223149449 is about 606.5481367206.

The spelling of 223149449 in words is "two hundred twenty-three million, one hundred forty-nine thousand, four hundred forty-nine".