3861997739 has 2 divisors, whose sum is σ = 3861997740. Its totient is φ = 3861997738.

The previous prime is 3861997721. The next prime is 3861997757. The reversal of 3861997739 is 9377991683.

3861997739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (3861997721) and next prime (3861997757).

It is a cyclic number.

It is not a de Polignac number, because 3861997739 - 2²⁰ = 3860949163 is a prime.

It is a super-2 number, since 2×3861997739² = 29830053072082224242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3861997709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930998869 + 1930998870.

It is an arithmetic number, because the mean of its divisors is an integer number (1930998870).

Almost surely, 2^3861997739 is an apocalyptic number.

3861997739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861997739 is an equidigital number, since it uses as much as digits as its factorization.

3861997739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 62.

The square root of 3861997739 is about 62144.9735618256. The cubic root of 3861997739 is about 1568.9315812226.

The spelling of 3861997739 in words is "three billion, eight hundred sixty-one million, nine hundred ninety-seven thousand, seven hundred thirty-nine".