3864557 has 2 divisors, whose sum is σ = 3864558. Its totient is φ = 3864556.

The previous prime is 3864551. The next prime is 3864583. The reversal of 3864557 is 7554683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2979076 + 885481 = 1726^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 3864557 - 2⁴ = 3864541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3864557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3864551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932278 + 1932279.

It is an arithmetic number, because the mean of its divisors is an integer number (1932279).

Almost surely, 2^3864557 is an apocalyptic number.

It is an amenable number.

3864557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864557 is an equidigital number, since it uses as much as digits as its factorization.

3864557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 3864557 is about 1965.8476543212. The cubic root of 3864557 is about 156.9278070186.

The spelling of 3864557 in words is "three million, eight hundred sixty-four thousand, five hundred fifty-seven".