3995791 has 2 divisors, whose sum is σ = 3995792. Its totient is φ = 3995790.

The previous prime is 3995779. The next prime is 3995837. The reversal of 3995791 is 1975993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3995791 - 2⁹ = 3995279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3995191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997895 + 1997896.

It is an arithmetic number, because the mean of its divisors is an integer number (1997896).

Almost surely, 2^3995791 is an apocalyptic number.

3995791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3995791 is an equidigital number, since it uses as much as digits as its factorization.

3995791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76545, while the sum is 43.

The square root of 3995791 is about 1998.9474730468. The cubic root of 3995791 is about 158.6844075644.

The spelling of 3995791 in words is "three million, nine hundred ninety-five thousand, seven hundred ninety-one".