4000879999 has 4 divisors (see below), whose sum is σ = 4098462480. Its totient is φ = 3903297520.

The previous prime is 4000879997. The next prime is 4000880021. The reversal of 4000879999 is 9999780004.

4000879999 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 4000879999 - 2¹ = 4000879997 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 (4000879997) 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, 48791179 + ... + 48791260.

It is an arithmetic number, because the mean of its divisors is an integer number (1024615620).

Almost surely, 2^4000879999 is an apocalyptic number.

4000879999 is a deficient number, since it is larger than the sum of its proper divisors (97582481).

4000879999 is an equidigital number, since it uses as much as digits as its factorization.

4000879999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97582480.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 4000879999 is about 63252.5098237216. The cubic root of 4000879999 is about 1587.5174527108.

The spelling of 4000879999 in words is "four billion, eight hundred seventy-nine thousand, nine hundred ninety-nine".