3999113925 has 24 divisors (see below), whose sum is σ = 6825158400. Its totient is φ = 2064057600.

The previous prime is 3999113903. The next prime is 3999113933. The reversal of 3999113925 is 5293119993.

It is not a de Polignac number, because 3999113925 - 2⁵ = 3999113893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 857700 + ... + 862349.

It is an arithmetic number, because the mean of its divisors is an integer number (284381600).

Almost surely, 2^3999113925 is an apocalyptic number.

It is an amenable number.

3999113925 is a deficient number, since it is larger than the sum of its proper divisors (2826044475).

3999113925 is a wasteful number, since it uses less digits than its factorization.

3999113925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720093 (or 1720088 counting only the distinct ones).

The product of its digits is 590490, while the sum is 51.

The square root of 3999113925 is about 63238.5477774435. The cubic root of 3999113925 is about 1587.2838302799.

The spelling of 3999113925 in words is "three billion, nine hundred ninety-nine million, one hundred thirteen thousand, nine hundred twenty-five".