4000807 has 4 divisors (see below), whose sum is σ = 4066456. Its totient is φ = 3935160.

The previous prime is 4000751. The next prime is 4000813. The reversal of 4000807 is 7080004.

It is a happy number.

4000807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4000807 - 2⁷ = 4000679 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32733 + ... + 32854.

It is an arithmetic number, because the mean of its divisors is an integer number (1016614).

Almost surely, 2^4000807 is an apocalyptic number.

4000807 is a deficient number, since it is larger than the sum of its proper divisors (65649).

4000807 is an equidigital number, since it uses as much as digits as its factorization.

4000807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65648.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 4000807 is about 2000.2017398253. The cubic root of 4000807 is about 158.7507797511.

The spelling of 4000807 in words is "four million, eight hundred seven", and thus it is an aban number.