3976439 has 2 divisors, whose sum is σ = 3976440. Its totient is φ = 3976438.

The previous prime is 3976417. The next prime is 3976459. The reversal of 3976439 is 9346793.

It is a strong prime.

It is an emirp because it is prime and its reverse (9346793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3976439 - 2⁸ = 3976183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3976396 and 3976405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3976409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988219 + 1988220.

It is an arithmetic number, because the mean of its divisors is an integer number (1988220).

Almost surely, 2^3976439 is an apocalyptic number.

3976439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3976439 is an equidigital number, since it uses as much as digits as its factorization.

3976439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 41.

The square root of 3976439 is about 1994.1010505990. The cubic root of 3976439 is about 158.4278182743.

The spelling of 3976439 in words is "three million, nine hundred seventy-six thousand, four hundred thirty-nine".