3994817 has 2 divisors, whose sum is σ = 3994818. Its totient is φ = 3994816.

The previous prime is 3994799. The next prime is 3994841. The reversal of 3994817 is 7184993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3671056 + 323761 = 1916^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 3994817 - 2⁸ = 3994561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3994897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997408 + 1997409.

It is an arithmetic number, because the mean of its divisors is an integer number (1997409).

Almost surely, 2^3994817 is an apocalyptic number.

It is an amenable number.

3994817 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994817 is an equidigital number, since it uses as much as digits as its factorization.

3994817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 3994817 is about 1998.7038299858. The cubic root of 3994817 is about 158.6715130651.

The spelling of 3994817 in words is "three million, nine hundred ninety-four thousand, eight hundred seventeen".