3949247 has 2 divisors, whose sum is σ = 3949248. Its totient is φ = 3949246.

The previous prime is 3949241. The next prime is 3949271. The reversal of 3949247 is 7429493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3949247 - 2¹⁰ = 3948223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3949247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949241) 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, 1974623 + 1974624.

It is an arithmetic number, because the mean of its divisors is an integer number (1974624).

Almost surely, 2^3949247 is an apocalyptic number.

3949247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949247 is an equidigital number, since it uses as much as digits as its factorization.

3949247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 3949247 is about 1987.2712446971. The cubic root of 3949247 is about 158.0658674259.

The spelling of 3949247 in words is "three million, nine hundred forty-nine thousand, two hundred forty-seven".