3993907 has 2 divisors, whose sum is σ = 3993908. Its totient is φ = 3993906.

The previous prime is 3993901. The next prime is 3993911. The reversal of 3993907 is 7093993.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3993907 - 2⁷ = 3993779 is a prime.

3993907 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3993907.

It is not a weakly prime, because it can be changed into another prime (3993901) 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, 1996953 + 1996954.

It is an arithmetic number, because the mean of its divisors is an integer number (1996954).

Almost surely, 2^3993907 is an apocalyptic number.

3993907 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993907 is an equidigital number, since it uses as much as digits as its factorization.

3993907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 3993907 is about 1998.4761694851. The cubic root of 3993907 is about 158.6594639489.

It can be divided in two parts, 3993 and 907, that added together give a square (4900 = 70²).

The spelling of 3993907 in words is "three million, nine hundred ninety-three thousand, nine hundred seven".