3981456679 has 2 divisors, whose sum is σ = 3981456680. Its totient is φ = 3981456678.

The previous prime is 3981456673. The next prime is 3981456683. The reversal of 3981456679 is 9766541893.

3981456679 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 is a cyclic number.

It is not a de Polignac number, because 3981456679 - 2⁷ = 3981456551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3981456673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990728339 + 1990728340.

It is an arithmetic number, because the mean of its divisors is an integer number (1990728340).

Almost surely, 2^3981456679 is an apocalyptic number.

3981456679 is a deficient number, since it is larger than the sum of its proper divisors (1).

3981456679 is an equidigital number, since it uses as much as digits as its factorization.

3981456679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 58.

The square root of 3981456679 is about 63098.7850833913. The cubic root of 3981456679 is about 1584.9442777135.

The spelling of 3981456679 in words is "three billion, nine hundred eighty-one million, four hundred fifty-six thousand, six hundred seventy-nine".