3999086061 has 24 divisors (see below), whose sum is σ = 5591355840. Its totient is φ = 2542437480.

The previous prime is 3999086057. The next prime is 3999086071. The reversal of 3999086061 is 1606809993.

It is not a de Polignac number, because 3999086061 - 2² = 3999086057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3999085995 and 3999086013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999086071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12081666 + ... + 12081996.

It is an arithmetic number, because the mean of its divisors is an integer number (232973160).

Almost surely, 2^3999086061 is an apocalyptic number.

It is an amenable number.

3999086061 is a deficient number, since it is larger than the sum of its proper divisors (1592269779).

3999086061 is an frugal number, since it uses more digits than its factorization.

3999086061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 3999086061 is about 63238.3274683953. The cubic root of 3999086061 is about 1587.2801437817.

The spelling of 3999086061 in words is "three billion, nine hundred ninety-nine million, eighty-six thousand, sixty-one".