4000321344 has 56 divisors (see below), whose sum is σ = 10925625088. Its totient is φ = 1290424320.

The previous prime is 4000321343. The next prime is 4000321373. The reversal of 4000321344 is 4431230004.

It is a self number, because there is not a number n which added to its sum of digits gives 4000321344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000321343) 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, 330097 + ... + 342000.

It is an arithmetic number, because the mean of its divisors is an integer number (195100448).

Almost surely, 2^4000321344 is an apocalyptic number.

It is an amenable number.

4000321344 is an abundant number, since it is smaller than the sum of its proper divisors (6925303744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000321344 is a wasteful number, since it uses less digits than its factorization.

4000321344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672143 (or 672133 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4000321344 is about 63248.0935997284. The cubic root of 4000321344 is about 1587.4435593136.

Adding to 4000321344 its reverse (4431230004), we get a palindrome (8431551348).

The spelling of 4000321344 in words is "four billion, three hundred twenty-one thousand, three hundred forty-four".