8395991 has 2 divisors, whose sum is σ = 8395992. Its totient is φ = 8395990.

The previous prime is 8395973. The next prime is 8395997. The reversal of 8395991 is 1995938.

8395991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8395991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8395997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197995 + 4197996.

It is an arithmetic number, because the mean of its divisors is an integer number (4197996).

Almost surely, 2^8395991 is an apocalyptic number.

8395991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8395991 is an equidigital number, since it uses as much as digits as its factorization.

8395991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 44.

The square root of 8395991 is about 2897.5836484906. The cubic root of 8395991 is about 203.2469270661.

The spelling of 8395991 in words is "eight million, three hundred ninety-five thousand, nine hundred ninety-one".