4256739 has 16 divisors (see below), whose sum is σ = 6478240. Its totient is φ = 2760480.

The previous prime is 4256737. The next prime is 4256761. The reversal of 4256739 is 9376524.

It is not a de Polignac number, because 4256739 - 2¹ = 4256737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4256737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132 + ... + 3129.

It is an arithmetic number, because the mean of its divisors is an integer number (404890).

Almost surely, 2^4256739 is an apocalyptic number.

4256739 is a deficient number, since it is larger than the sum of its proper divisors (2221501).

4256739 is a wasteful number, since it uses less digits than its factorization.

4256739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4301 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 4256739 is about 2063.1866129849. The cubic root of 4256739 is about 162.0661595342.

The spelling of 4256739 in words is "four million, two hundred fifty-six thousand, seven hundred thirty-nine".