4000444399 has 16 divisors (see below), whose sum is σ = 4661126208. Its totient is φ = 3362141952.

The previous prime is 4000444397. The next prime is 4000444421. The reversal of 4000444399 is 9934440004.

It is a cyclic number.

It is not a de Polignac number, because 4000444399 - 2¹ = 4000444397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000444397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946539 + ... + 950755.

It is an arithmetic number, because the mean of its divisors is an integer number (291320388).

Almost surely, 2^4000444399 is an apocalyptic number.

4000444399 is a deficient number, since it is larger than the sum of its proper divisors (660681809).

4000444399 is a wasteful number, since it uses less digits than its factorization.

4000444399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 4000444399 is about 63249.0663883666. The cubic root of 4000444399 is about 1587.4598364113.

The spelling of 4000444399 in words is "four billion, four hundred forty-four thousand, three hundred ninety-nine".