4256749 has 8 divisors (see below), whose sum is σ = 5151168. Its totient is φ = 3433920.

The previous prime is 4256737. The next prime is 4256761. The reversal of 4256749 is 9476524.

It is an interprime number because it is at equal distance from previous prime (4256737) and next prime (4256761).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4256749 - 2⁵ = 4256717 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 2¹³ + 5 + 6⁶ + 7 + 4¹¹ + 9⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17767 + ... + 18004.

It is an arithmetic number, because the mean of its divisors is an integer number (643896).

Almost surely, 2^4256749 is an apocalyptic number.

It is an amenable number.

4256749 is a deficient number, since it is larger than the sum of its proper divisors (894419).

4256749 is a wasteful number, since it uses less digits than its factorization.

4256749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35795.

The product of its digits is 60480, while the sum is 37.

The square root of 4256749 is about 2063.1890364191. The cubic root of 4256749 is about 162.0662864436.

It can be divided in two parts, 4256 and 749, that added together give a palindrome (5005).

The spelling of 4256749 in words is "four million, two hundred fifty-six thousand, seven hundred forty-nine".