3999938005259 has 8 divisors (see below), whose sum is σ = 4580668025088. Its totient is φ = 3421535561640.

The previous prime is 3999938005243. The next prime is 3999938005289. The reversal of 3999938005259 is 9525008399993.

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

It is not a de Polignac number, because 3999938005259 - 2⁴ = 3999938005243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3999938005192 and 3999938005201.

It is not an unprimeable number, because it can be changed into a prime (3999938005289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581890367 + ... + 581897240.

It is an arithmetic number, because the mean of its divisors is an integer number (572583503136).

Almost surely, 2^{3999938005259} is an apocalyptic number.

3999938005259 is a deficient number, since it is larger than the sum of its proper divisors (580730019829).

3999938005259 is a wasteful number, since it uses less digits than its factorization.

3999938005259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163788105.

The product of its (nonzero) digits is 212576400, while the sum is 71.

The spelling of 3999938005259 in words is "three trillion, nine hundred ninety-nine billion, nine hundred thirty-eight million, five thousand, two hundred fifty-nine".