3994069 has 2 divisors, whose sum is σ = 3994070. Its totient is φ = 3994068.

The previous prime is 3994021. The next prime is 3994079. The reversal of 3994069 is 9604993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2683044 + 1311025 = 1638^2 + 1145^2 .

It is an emirp because it is prime and its reverse (9604993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3994069 - 2⁹ = 3993557 is a prime.

It is a super-2 number, since 2×3994069² = 31905174353522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3994079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997034 + 1997035.

It is an arithmetic number, because the mean of its divisors is an integer number (1997035).

Almost surely, 2^3994069 is an apocalyptic number.

It is an amenable number.

3994069 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994069 is an equidigital number, since it uses as much as digits as its factorization.

3994069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3994069 is about 1998.5166999552. The cubic root of 3994069 is about 158.6616090903.

The spelling of 3994069 in words is "three million, nine hundred ninety-four thousand, sixty-nine".