7941391 has 2 divisors, whose sum is σ = 7941392. Its totient is φ = 7941390.

The previous prime is 7941383. The next prime is 7941419. The reversal of 7941391 is 1931497.

It is a weak prime.

It is an emirp because it is prime and its reverse (1931497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7941391 - 2³ = 7941383 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7941991) 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, 3970695 + 3970696.

It is an arithmetic number, because the mean of its divisors is an integer number (3970696).

Almost surely, 2^7941391 is an apocalyptic number.

7941391 is a deficient number, since it is larger than the sum of its proper divisors (1).

7941391 is an equidigital number, since it uses as much as digits as its factorization.

7941391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 7941391 is about 2818.0473736259. The cubic root of 7941391 is about 199.5103940749.

The spelling of 7941391 in words is "seven million, nine hundred forty-one thousand, three hundred ninety-one".