3999135773 has 2 divisors, whose sum is σ = 3999135774. Its totient is φ = 3999135772.

The previous prime is 3999135739. The next prime is 3999135781. The reversal of 3999135773 is 3775319993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3490091929 + 509043844 = 59077^2 + 22562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3999135773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3999134773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999567886 + 1999567887.

It is an arithmetic number, because the mean of its divisors is an integer number (1999567887).

Almost surely, 2^3999135773 is an apocalyptic number.

It is an amenable number.

3999135773 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999135773 is an equidigital number, since it uses as much as digits as its factorization.

3999135773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4822335, while the sum is 56.

The square root of 3999135773 is about 63238.7205199473. The cubic root of 3999135773 is about 1587.2867208297.

The spelling of 3999135773 in words is "three billion, nine hundred ninety-nine million, one hundred thirty-five thousand, seven hundred seventy-three".