3999135739 has 2 divisors, whose sum is σ = 3999135740. Its totient is φ = 3999135738.

The previous prime is 3999135697. The next prime is 3999135773. The reversal of 3999135739 is 9375319993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3999135739 - 2¹³ = 3999127547 is a prime.

It is a super-2 number, since 2×3999135739² = 31986173317894152242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3999135799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999567869 + 1999567870.

It is an arithmetic number, because the mean of its divisors is an integer number (1999567870).

Almost surely, 2^3999135739 is an apocalyptic number.

3999135739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999135739 is an equidigital number, since it uses as much as digits as its factorization.

3999135739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6200145, while the sum is 58.

The square root of 3999135739 is about 63238.7202511246. The cubic root of 3999135739 is about 1587.2867163314.

The spelling of 3999135739 in words is "three billion, nine hundred ninety-nine million, one hundred thirty-five thousand, seven hundred thirty-nine".