3946403 has 2 divisors, whose sum is σ = 3946404. Its totient is φ = 3946402.

The previous prime is 3946399. The next prime is 3946421. The reversal of 3946403 is 3046493.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3946403 - 2² = 3946399 is a prime.

It is not a weakly prime, because it can be changed into another prime (3946463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973201 + 1973202.

It is an arithmetic number, because the mean of its divisors is an integer number (1973202).

Almost surely, 2^3946403 is an apocalyptic number.

3946403 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946403 is an equidigital number, since it uses as much as digits as its factorization.

3946403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 3946403 is about 1986.5555617702. Note that the first 4 decimals coincide. The cubic root of 3946403 is about 158.0279152728.

The spelling of 3946403 in words is "three million, nine hundred forty-six thousand, four hundred three".