4256909 has 8 divisors (see below), whose sum is σ = 4518720. Its totient is φ = 4001536.

The previous prime is 4256897. The next prime is 4256921. The reversal of 4256909 is 9096524.

It is an interprime number because it is at equal distance from previous prime (4256897) and next prime (4256921).

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

It is a cyclic number.

It is not a de Polignac number, because 4256909 - 2⁸ = 4256653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (564840).

Almost surely, 2^4256909 is an apocalyptic number.

It is an amenable number.

4256909 is a deficient number, since it is larger than the sum of its proper divisors (261811).

4256909 is a wasteful number, since it uses less digits than its factorization.

4256909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 4256909 is about 2063.2278109797. The cubic root of 4256909 is about 162.0683169666.

The spelling of 4256909 in words is "four million, two hundred fifty-six thousand, nine hundred nine".