4000659 has 16 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 2331936.

The previous prime is 4000651. The next prime is 4000669. The reversal of 4000659 is 9560004.

It is not a de Polignac number, because 4000659 - 2³ = 4000651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000651) 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, 1959 + ... + 3440.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^4000659 is an apocalyptic number.

4000659 is a deficient number, since it is larger than the sum of its proper divisors (2047341).

4000659 is a wasteful number, since it uses less digits than its factorization.

4000659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 4000659 is about 2000.1647432149. The cubic root of 4000659 is about 158.7488221956.

The spelling of 4000659 in words is "four million, six hundred fifty-nine", and thus it is an aban number.