3946837 has 2 divisors, whose sum is σ = 3946838. Its totient is φ = 3946836.

The previous prime is 3946829. The next prime is 3946843. The reversal of 3946837 is 7386493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 1094116 = 1689^2 + 1046^2 .

It is an emirp because it is prime and its reverse (7386493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3946837 - 2³ = 3946829 is a prime.

3946837 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3946837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3946037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973418 + 1973419.

It is an arithmetic number, because the mean of its divisors is an integer number (1973419).

Almost surely, 2^3946837 is an apocalyptic number.

It is an amenable number.

3946837 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946837 is an equidigital number, since it uses as much as digits as its factorization.

3946837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 3946837 is about 1986.6647930640. The cubic root of 3946837 is about 158.0337080247.

The spelling of 3946837 in words is "three million, nine hundred forty-six thousand, eight hundred thirty-seven".