3940207 has 2 divisors, whose sum is σ = 3940208. Its totient is φ = 3940206.

The previous prime is 3940177. The next prime is 3940213. The reversal of 3940207 is 7020493.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3940207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3940217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970103 + 1970104.

It is an arithmetic number, because the mean of its divisors is an integer number (1970104).

Almost surely, 2^3940207 is an apocalyptic number.

3940207 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940207 is an equidigital number, since it uses as much as digits as its factorization.

3940207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3940207 is about 1984.9954659898. The cubic root of 3940207 is about 157.9451687109.

The spelling of 3940207 in words is "three million, nine hundred forty thousand, two hundred seven".