4000438055 has 16 divisors (see below), whose sum is σ = 4823289504. Its totient is φ = 3185212800.

The previous prime is 4000438037. The next prime is 4000438061. The reversal of 4000438055 is 5508340004.

4000438055 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4000438055 - 2¹² = 4000433959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036880 + ... + 1040730.

It is an arithmetic number, because the mean of its divisors is an integer number (301455594).

Almost surely, 2^4000438055 is an apocalyptic number.

4000438055 is a deficient number, since it is larger than the sum of its proper divisors (822851449).

4000438055 is a wasteful number, since it uses less digits than its factorization.

4000438055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4786.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4000438055 is about 63249.0162374088. The cubic root of 4000438055 is about 1587.4589972670.

Adding to 4000438055 its reverse (5508340004), we get a palindrome (9508778059).

The spelling of 4000438055 in words is "four billion, four hundred thirty-eight thousand, fifty-five".