223847799449 has 2 divisors, whose sum is σ = 223847799450. Its totient is φ = 223847799448.

The previous prime is 223847799389. The next prime is 223847799491. The reversal of 223847799449 is 944997748322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174927207049 + 48920592400 = 418243^2 + 221180^2 .

It is a cyclic number.

It is not a de Polignac number, because 223847799449 - 2¹⁶ = 223847733913 is a prime.

It is not a weakly prime, because it can be changed into another prime (223847799649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111923899724 + 111923899725.

It is an arithmetic number, because the mean of its divisors is an integer number (111923899725).

Almost surely, 2^223847799449 is an apocalyptic number.

It is an amenable number.

223847799449 is a deficient number, since it is larger than the sum of its proper divisors (1).

223847799449 is an equidigital number, since it uses as much as digits as its factorization.

223847799449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 219469824, while the sum is 68.

The spelling of 223847799449 in words is "two hundred twenty-three billion, eight hundred forty-seven million, seven hundred ninety-nine thousand, four hundred forty-nine".