3864247 has 2 divisors, whose sum is σ = 3864248. Its totient is φ = 3864246.

The previous prime is 3864233. The next prime is 3864269. The reversal of 3864247 is 7424683.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3864247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3864347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932123 + 1932124.

It is an arithmetic number, because the mean of its divisors is an integer number (1932124).

Almost surely, 2^3864247 is an apocalyptic number.

3864247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864247 is an equidigital number, since it uses as much as digits as its factorization.

3864247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 3864247 is about 1965.7688063452. The cubic root of 3864247 is about 156.9236108567.

The spelling of 3864247 in words is "three million, eight hundred sixty-four thousand, two hundred forty-seven".