4000393 has 8 divisors (see below), whose sum is σ = 4230720. Its totient is φ = 3772080.

The previous prime is 4000379. The next prime is 4000439. The reversal of 4000393 is 3930004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4000393 - 2⁵ = 4000361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4000393.

It is not an unprimeable number, because it can be changed into a prime (4000303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5571 + ... + 6247.

It is an arithmetic number, because the mean of its divisors is an integer number (528840).

Almost surely, 2^4000393 is an apocalyptic number.

It is an amenable number.

4000393 is a deficient number, since it is larger than the sum of its proper divisors (230327).

4000393 is a wasteful number, since it uses less digits than its factorization.

4000393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 4000393 is about 2000.0982475869. The cubic root of 4000393 is about 158.7453037650.

Adding to 4000393 its reverse (3930004), we get a palindrome (7930397).

The spelling of 4000393 in words is "four million, three hundred ninety-three", and thus it is an aban number.