4000440399 has 4 divisors (see below), whose sum is σ = 5333920536. Its totient is φ = 2666960264.

The previous prime is 4000440383. The next prime is 4000440413. The reversal of 4000440399 is 9930440004.

It is a happy number.

4000440399 is digitally balanced in base 3, 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 4000440399 - 2⁴ = 4000440383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000440359) 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, 666740064 + ... + 666740069.

It is an arithmetic number, because the mean of its divisors is an integer number (1333480134).

Almost surely, 2^4000440399 is an apocalyptic number.

4000440399 is a deficient number, since it is larger than the sum of its proper divisors (1333480137).

4000440399 is a wasteful number, since it uses less digits than its factorization.

4000440399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333480136.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 4000440399 is about 63249.0347673385. The cubic root of 4000440399 is about 1587.4593073166.

The spelling of 4000440399 in words is "four billion, four hundred forty thousand, three hundred ninety-nine".