123444413 has 2 divisors, whose sum is σ = 123444414. Its totient is φ = 123444412.

The previous prime is 123444407. The next prime is 123444479. The reversal of 123444413 is 314444321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122832889 + 611524 = 11083^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 123444413 - 2⁴ = 123444397 is a prime.

It is a super-3 number, since 3×123444413³ (a number of 25 digits) contains 333 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 (123444493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61722206 + 61722207.

It is an arithmetic number, because the mean of its divisors is an integer number (61722207).

Almost surely, 2^123444413 is an apocalyptic number.

It is an amenable number.

123444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

123444413 is an equidigital number, since it uses as much as digits as its factorization.

123444413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 26.

The square root of 123444413 is about 11110.5541265951. The cubic root of 123444413 is about 497.9172201025.

Adding to 123444413 its reverse (314444321), we get a palindrome (437888734).

The spelling of 123444413 in words is "one hundred twenty-three million, four hundred forty-four thousand, four hundred thirteen".