3999112 has 16 divisors (see below), whose sum is σ = 8075340. Its totient is φ = 1845696.

The previous prime is 3999109. The next prime is 3999113. The reversal of 3999112 is 2119993.

It can be written as a sum of positive squares in 2 ways, for example, as 3865156 + 133956 = 1966^2 + 366^2 .

It is not an unprimeable number, because it can be changed into a prime (3999113) 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, 19123 + ... + 19330.

Almost surely, 2^3999112 is an apocalyptic number.

It is an amenable number.

3999112 is an abundant number, since it is smaller than the sum of its proper divisors (4076228).

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

3999112 is a wasteful number, since it uses less digits than its factorization.

3999112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38472 (or 38468 counting only the distinct ones).

The product of its digits is 4374, while the sum is 34.

The square root of 3999112 is about 1999.7779876776. Note that the first 3 decimals coincide. The cubic root of 3999112 is about 158.7283575597.

The spelling of 3999112 in words is "three million, nine hundred ninety-nine thousand, one hundred twelve".