3940946 has 4 divisors (see below), whose sum is σ = 5911422. Its totient is φ = 1970472.

The previous prime is 3940943. The next prime is 3940967. The reversal of 3940946 is 6490493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6490493 = 499 ⋅13007.

It can be written as a sum of positive squares in only one way, i.e., 3150625 + 790321 = 1775^2 + 889^2 .

It is not an unprimeable number, because it can be changed into a prime (3940943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985235 + ... + 985238.

Almost surely, 2^3940946 is an apocalyptic number.

3940946 is a deficient number, since it is larger than the sum of its proper divisors (1970476).

3940946 is a wasteful number, since it uses less digits than its factorization.

3940946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970475.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3940946 is about 1985.1816037834. The cubic root of 3940946 is about 157.9550424886.

The spelling of 3940946 in words is "three million, nine hundred forty thousand, nine hundred forty-six".