4001044393 has 4 divisors (see below), whose sum is σ = 4008052048. Its totient is φ = 3994036740.

The previous prime is 4001044381. The next prime is 4001044441. The reversal of 4001044393 is 3934401004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4001044393 - 2⁹ = 4001043881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001044343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3502971 + ... + 3504112.

It is an arithmetic number, because the mean of its divisors is an integer number (1002013012).

Almost surely, 2^4001044393 is an apocalyptic number.

It is an amenable number.

4001044393 is a deficient number, since it is larger than the sum of its proper divisors (7007655).

4001044393 is an equidigital number, since it uses as much as digits as its factorization.

4001044393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007654.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4001044393 is about 63253.8093161195. The cubic root of 4001044393 is about 1587.5391958248.

Adding to 4001044393 its reverse (3934401004), we get a palindrome (7935445397).

The spelling of 4001044393 in words is "four billion, one million, forty-four thousand, three hundred ninety-three".