123623449 has 2 divisors, whose sum is σ = 123623450. Its totient is φ = 123623448.

The previous prime is 123623447. The next prime is 123623471. The reversal of 123623449 is 944326321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123210000 + 413449 = 11100^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 123623449 - 2¹ = 123623447 is a prime.

Together with 123623447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123623447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61811724 + 61811725.

It is an arithmetic number, because the mean of its divisors is an integer number (61811725).

Almost surely, 2^123623449 is an apocalyptic number.

It is an amenable number.

123623449 is a deficient number, since it is larger than the sum of its proper divisors (1).

123623449 is an equidigital number, since it uses as much as digits as its factorization.

123623449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 123623449 is about 11118.6082312491. The cubic root of 123623449 is about 498.1578197461.

The spelling of 123623449 in words is "one hundred twenty-three million, six hundred twenty-three thousand, four hundred forty-nine".