4123439 has 2 divisors, whose sum is σ = 4123440. Its totient is φ = 4123438.

The previous prime is 4123421. The next prime is 4123447. The reversal of 4123439 is 9343214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4123439 - 2¹² = 4119343 is a prime.

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 (4123489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061719 + 2061720.

It is an arithmetic number, because the mean of its divisors is an integer number (2061720).

Almost surely, 2^4123439 is an apocalyptic number.

4123439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123439 is an equidigital number, since it uses as much as digits as its factorization.

4123439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 4123439 is about 2030.6252731610. The cubic root of 4123439 is about 160.3564838016.

The spelling of 4123439 in words is "four million, one hundred twenty-three thousand, four hundred thirty-nine".