3940366 has 4 divisors (see below), whose sum is σ = 5910552. Its totient is φ = 1970182.

The previous prime is 3940351. The next prime is 3940367. The reversal of 3940366 is 6630493.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985090 + ... + 985093.

It is an arithmetic number, because the mean of its divisors is an integer number (1477638).

Almost surely, 2^3940366 is an apocalyptic number.

3940366 is a deficient number, since it is larger than the sum of its proper divisors (1970186).

3940366 is a wasteful number, since it uses less digits than its factorization.

3940366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970185.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3940366 is about 1985.0355160551. The cubic root of 3940366 is about 157.9472932139.

The spelling of 3940366 in words is "three million, nine hundred forty thousand, three hundred sixty-six".