3958439 has 2 divisors, whose sum is σ = 3958440. Its totient is φ = 3958438.

The previous prime is 3958397. The next prime is 3958457. The reversal of 3958439 is 9348593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3958439 - 2⁸ = 3958183 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3958396 and 3958405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3958459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1979219 + 1979220.

It is an arithmetic number, because the mean of its divisors is an integer number (1979220).

Almost surely, 2^3958439 is an apocalyptic number.

3958439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3958439 is an equidigital number, since it uses as much as digits as its factorization.

3958439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 3958439 is about 1989.5826195461. The cubic root of 3958439 is about 158.1884068747.

The spelling of 3958439 in words is "three million, nine hundred fifty-eight thousand, four hundred thirty-nine".