223742399 has 2 divisors, whose sum is σ = 223742400. Its totient is φ = 223742398.

The previous prime is 223742383. The next prime is 223742411. The reversal of 223742399 is 993247322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223742399 - 2⁴ = 223742383 is a prime.

It is a super-2 number, since 2×223742399² = 100121322220550402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223742329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111871199 + 111871200.

It is an arithmetic number, because the mean of its divisors is an integer number (111871200).

Almost surely, 2^223742399 is an apocalyptic number.

223742399 is a deficient number, since it is larger than the sum of its proper divisors (1).

223742399 is an equidigital number, since it uses as much as digits as its factorization.

223742399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 41.

The square root of 223742399 is about 14958.0212260847. The cubic root of 223742399 is about 607.0848990171.

The spelling of 223742399 in words is "two hundred twenty-three million, seven hundred forty-two thousand, three hundred ninety-nine".