7963391 has 2 divisors, whose sum is σ = 7963392. Its totient is φ = 7963390.

The previous prime is 7963379. The next prime is 7963393. The reversal of 7963391 is 1933697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7963391 - 2¹⁸ = 7701247 is a prime.

Together with 7963393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7963393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3981695 + 3981696.

It is an arithmetic number, because the mean of its divisors is an integer number (3981696).

Almost surely, 2^7963391 is an apocalyptic number.

7963391 is a deficient number, since it is larger than the sum of its proper divisors (1).

7963391 is an equidigital number, since it uses as much as digits as its factorization.

7963391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 7963391 is about 2821.9480859860. The cubic root of 7963391 is about 199.6944584595.

The spelling of 7963391 in words is "seven million, nine hundred sixty-three thousand, three hundred ninety-one".