3931679849 has 2 divisors, whose sum is σ = 3931679850. Its totient is φ = 3931679848.

The previous prime is 3931679779. The next prime is 3931679881. The reversal of 3931679849 is 9489761393.

3931679849 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., 3017524624 + 914155225 = 54932^2 + 30235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3931679849 - 2¹² = 3931675753 is a prime.

It is not a weakly prime, because it can be changed into another prime (3931679149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965839924 + 1965839925.

It is an arithmetic number, because the mean of its divisors is an integer number (1965839925).

Almost surely, 2^3931679849 is an apocalyptic number.

It is an amenable number.

3931679849 is a deficient number, since it is larger than the sum of its proper divisors (1).

3931679849 is an equidigital number, since it uses as much as digits as its factorization.

3931679849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 59.

The square root of 3931679849 is about 62703.1087666313. The cubic root of 3931679849 is about 1578.3114804797.

The spelling of 3931679849 in words is "three billion, nine hundred thirty-one million, six hundred seventy-nine thousand, eight hundred forty-nine".