3940066 has 12 divisors (see below), whose sum is σ = 6400242. Its totient is φ = 1818336.

The previous prime is 3940063. The next prime is 3940091. The reversal of 3940066 is 6600493.

It can be written as a sum of positive squares in 3 ways, for example, as 2449225 + 1490841 = 1565^2 + 1221^2 .

It is not an unprimeable number, because it can be changed into a prime (3940063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5491 + ... + 6166.

Almost surely, 2^3940066 is an apocalyptic number.

3940066 is a deficient number, since it is larger than the sum of its proper divisors (2460176).

3940066 is a wasteful number, since it uses less digits than its factorization.

3940066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685 (or 11672 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3940066 is about 1984.9599492181. The cubic root of 3940066 is about 157.9432846699.

The spelling of 3940066 in words is "three million, nine hundred forty thousand, sixty-six".