4009018 has 24 divisors (see below), whose sum is σ = 6752700. Its totient is φ = 1782144.

The previous prime is 4009007. The next prime is 4009037. The reversal of 4009018 is 8109004.

It can be written as a sum of positive squares in 6 ways, for example, as 1471369 + 2537649 = 1213^2 + 1593^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4009018.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9598 + ... + 10006.

Almost surely, 2^4009018 is an apocalyptic number.

4009018 is a deficient number, since it is larger than the sum of its proper divisors (2743682).

4009018 is a wasteful number, since it uses less digits than its factorization.

4009018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 4009018 is about 2002.2532307378. The cubic root of 4009018 is about 158.8593088492.

The spelling of 4009018 in words is "four million, nine thousand, eighteen".