3999747275 has 6 divisors (see below), whose sum is σ = 4959686652. Its totient is φ = 3199797800.

The previous prime is 3999747253. The next prime is 3999747289. The reversal of 3999747275 is 5727479993.

It is not a de Polignac number, because 3999747275 - 2¹⁰ = 3999746251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 79994921 + ... + 79994970.

It is an arithmetic number, because the mean of its divisors is an integer number (826614442).

Almost surely, 2^3999747275 is an apocalyptic number.

3999747275 is a deficient number, since it is larger than the sum of its proper divisors (959939377).

3999747275 is a wasteful number, since it uses less digits than its factorization.

3999747275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159989901 (or 159989896 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 62.

The square root of 3999747275 is about 63243.5552052539. Note that the first 3 decimals coincide. The cubic root of 3999747275 is about 1587.3676199365.

The spelling of 3999747275 in words is "three billion, nine hundred ninety-nine million, seven hundred forty-seven thousand, two hundred seventy-five".