123349439 has 2 divisors, whose sum is σ = 123349440. Its totient is φ = 123349438.

The previous prime is 123349423. The next prime is 123349477. The reversal of 123349439 is 934943321.

It is a happy number.

It is an a-pointer prime, because the next prime (123349477) can be obtained adding 123349439 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123349439 - 2⁴ = 123349423 is a prime.

It is a super-2 number, since 2×123349439² = 30430168203229442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123349409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61674719 + 61674720.

It is an arithmetic number, because the mean of its divisors is an integer number (61674720).

Almost surely, 2^123349439 is an apocalyptic number.

123349439 is a deficient number, since it is larger than the sum of its proper divisors (1).

123349439 is an equidigital number, since it uses as much as digits as its factorization.

123349439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The square root of 123349439 is about 11106.2792599502. The cubic root of 123349439 is about 497.7894937257.

The spelling of 123349439 in words is "one hundred twenty-three million, three hundred forty-nine thousand, four hundred thirty-nine".