4001385999 has 32 divisors (see below), whose sum is σ = 6088582080. Its totient is φ = 2315630592.

The previous prime is 4001385991. The next prime is 4001386009. The reversal of 4001385999 is 9995831004.

4001385999 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 4001385999 - 2³ = 4001385991 is a prime.

It is a super-2 number, since 2×4001385999² = 32022179825986456002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001385991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1370289 + ... + 1373205.

It is an arithmetic number, because the mean of its divisors is an integer number (190268190).

Almost surely, 2^4001385999 is an apocalyptic number.

4001385999 is a deficient number, since it is larger than the sum of its proper divisors (2087196081).

4001385999 is a wasteful number, since it uses less digits than its factorization.

4001385999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 4001385999 is about 63256.5095385447. The cubic root of 4001385999 is about 1587.5843754852.

The spelling of 4001385999 in words is "four billion, one million, three hundred eighty-five thousand, nine hundred ninety-nine".