3982813 has 2 divisors, whose sum is σ = 3982814. Its totient is φ = 3982812.

The previous prime is 3982801. The next prime is 3982819. The reversal of 3982813 is 3182893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3523129 + 459684 = 1877^2 + 678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3982813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3982819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1991406 + 1991407.

It is an arithmetic number, because the mean of its divisors is an integer number (1991407).

Almost surely, 2^3982813 is an apocalyptic number.

It is an amenable number.

3982813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3982813 is an equidigital number, since it uses as much as digits as its factorization.

3982813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 3982813 is about 1995.6986245423. The cubic root of 3982813 is about 158.5124232717.

The spelling of 3982813 in words is "three million, nine hundred eighty-two thousand, eight hundred thirteen".