3968871397 has 2 divisors, whose sum is σ = 3968871398. Its totient is φ = 3968871396.

The previous prime is 3968871311. The next prime is 3968871407. The reversal of 3968871397 is 7931788693.

3968871397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3907625121 + 61246276 = 62511^2 + 7826^2 .

It is a cyclic number.

It is not a de Polignac number, because 3968871397 - 2¹⁹ = 3968347109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3968871307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984435698 + 1984435699.

It is an arithmetic number, because the mean of its divisors is an integer number (1984435699).

Almost surely, 2^3968871397 is an apocalyptic number.

It is an amenable number.

3968871397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3968871397 is an equidigital number, since it uses as much as digits as its factorization.

3968871397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 61.

The square root of 3968871397 is about 62998.9793330019. The cubic root of 3968871397 is about 1583.2725256746.

The spelling of 3968871397 in words is "three billion, nine hundred sixty-eight million, eight hundred seventy-one thousand, three hundred ninety-seven".