123633449 has 2 divisors, whose sum is σ = 123633450. Its totient is φ = 123633448.

The previous prime is 123633431. The next prime is 123633451. The reversal of 123633449 is 944336321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92775424 + 30858025 = 9632^2 + 5555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123633449 is a prime.

Together with 123633451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123633479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61816724 + 61816725.

It is an arithmetic number, because the mean of its divisors is an integer number (61816725).

Almost surely, 2^123633449 is an apocalyptic number.

It is an amenable number.

123633449 is a deficient number, since it is larger than the sum of its proper divisors (1).

123633449 is an equidigital number, since it uses as much as digits as its factorization.

123633449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 35.

The square root of 123633449 is about 11119.0579187267. The cubic root of 123633449 is about 498.1712515125.

The spelling of 123633449 in words is "one hundred twenty-three million, six hundred thirty-three thousand, four hundred forty-nine".