4056385 has 4 divisors (see below), whose sum is σ = 4867668. Its totient is φ = 3245104.

The previous prime is 4056383. The next prime is 4056389. The reversal of 4056385 is 5836504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 3560769 = 704^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 4056385 - 2¹ = 4056383 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4056383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405634 + ... + 405643.

It is an arithmetic number, because the mean of its divisors is an integer number (1216917).

Almost surely, 2^4056385 is an apocalyptic number.

It is an amenable number.

4056385 is a deficient number, since it is larger than the sum of its proper divisors (811283).

4056385 is an equidigital number, since it uses as much as digits as its factorization.

4056385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811282.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 4056385 is about 2014.0469210026. The cubic root of 4056385 is about 159.4825077531.

The spelling of 4056385 in words is "four million, fifty-six thousand, three hundred eighty-five".