4013006 has 4 divisors (see below), whose sum is σ = 6019512. Its totient is φ = 2006502.

The previous prime is 4012999. The next prime is 4013021. The reversal of 4013006 is 6003104.

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

It is a super-2 number, since 2×4013006² = 32208434312072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003250 + ... + 1003253.

It is an arithmetic number, because the mean of its divisors is an integer number (1504878).

Almost surely, 2^4013006 is an apocalyptic number.

4013006 is a deficient number, since it is larger than the sum of its proper divisors (2006506).

4013006 is a wasteful number, since it uses less digits than its factorization.

4013006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006505.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4013006 is about 2003.2488612252. The cubic root of 4013006 is about 158.9119668791.

The spelling of 4013006 in words is "four million, thirteen thousand, six".