4256387 has 4 divisors (see below), whose sum is σ = 4272480. Its totient is φ = 4240296.

The previous prime is 4256383. The next prime is 4256389. The reversal of 4256387 is 7836524.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4256387 - 2² = 4256383 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2¹¹ + 5³ + 6 + 3¹⁰ + 8³ + 7³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4256381) 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, 7643 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (1068120).

Almost surely, 2^4256387 is an apocalyptic number.

4256387 is a deficient number, since it is larger than the sum of its proper divisors (16093).

4256387 is a wasteful number, since it uses less digits than its factorization.

4256387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092.

The product of its digits is 40320, while the sum is 35.

The square root of 4256387 is about 2063.1013062862. The cubic root of 4256387 is about 162.0616921974.

The spelling of 4256387 in words is "four million, two hundred fifty-six thousand, three hundred eighty-seven".