4005668838 has 8 divisors (see below), whose sum is σ = 8011337688. Its totient is φ = 1335222944.

The previous prime is 4005668837. The next prime is 4005668839. The reversal of 4005668838 is 8388665004.

It is an interprime number because it is at equal distance from previous prime (4005668837) and next prime (4005668839).

It is a sphenic number, since it is the product of 3 distinct primes.

4005668838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005668833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333805731 + ... + 333805742.

It is an arithmetic number, because the mean of its divisors is an integer number (1001417211).

Almost surely, 2^4005668838 is an apocalyptic number.

4005668838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4005668838 is a wasteful number, since it uses less digits than its factorization.

4005668838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667611478.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 4005668838 is about 63290.3534355750. The cubic root of 4005668838 is about 1588.1505912786.

The spelling of 4005668838 in words is "four billion, five million, six hundred sixty-eight thousand, eight hundred thirty-eight".