3865457 has 2 divisors, whose sum is σ = 3865458. Its totient is φ = 3865456.

The previous prime is 3865447. The next prime is 3865469. The reversal of 3865457 is 7545683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3500641 + 364816 = 1871^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865457 - 2¹⁰ = 3864433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3865457.

It is not a weakly prime, because it can be changed into another prime (3865447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932728 + 1932729.

It is an arithmetic number, because the mean of its divisors is an integer number (1932729).

Almost surely, 2^3865457 is an apocalyptic number.

It is an amenable number.

3865457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865457 is an equidigital number, since it uses as much as digits as its factorization.

3865457 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 3865457 is about 1966.0765498830. The cubic root of 3865457 is about 156.9399881530.

The spelling of 3865457 in words is "three million, eight hundred sixty-five thousand, four hundred fifty-seven".