3999769931 has 2 divisors, whose sum is σ = 3999769932. Its totient is φ = 3999769930.

The previous prime is 3999769913. The next prime is 3999769957. The reversal of 3999769931 is 1399679993.

Together with previous prime (3999769913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3999769931 - 2³⁰ = 2926028107 is a prime.

It is a super-2 number, since 2×3999769931² = 31996319001863489522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3999769901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999884965 + 1999884966.

It is an arithmetic number, because the mean of its divisors is an integer number (1999884966).

Almost surely, 2^3999769931 is an apocalyptic number.

3999769931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999769931 is an equidigital number, since it uses as much as digits as its factorization.

3999769931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22320522, while the sum is 65.

The square root of 3999769931 is about 63243.7343220655. The cubic root of 3999769931 is about 1587.3706170703.

The spelling of 3999769931 in words is "three billion, nine hundred ninety-nine million, seven hundred sixty-nine thousand, nine hundred thirty-one".