4000459 has 4 divisors (see below), whose sum is σ = 4174416. Its totient is φ = 3826504.

The previous prime is 4000439. The next prime is 4000489. The reversal of 4000459 is 9540004.

4000459 = 406² + 407² + ... + 428².

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000439) 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, 86944 + ... + 86989.

It is an arithmetic number, because the mean of its divisors is an integer number (1043604).

Almost surely, 2^4000459 is an apocalyptic number.

4000459 is a deficient number, since it is larger than the sum of its proper divisors (173957).

4000459 is a wasteful number, since it uses less digits than its factorization.

4000459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173956.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4000459 is about 2000.1147467083. The cubic root of 4000459 is about 158.7461767736.

The spelling of 4000459 in words is "four million, four hundred fifty-nine", and thus it is an aban number.