3978459701 has 2 divisors, whose sum is σ = 3978459702. Its totient is φ = 3978459700.

The previous prime is 3978459691. The next prime is 3978459781. The reversal of 3978459701 is 1079548793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2354772676 + 1623687025 = 48526^2 + 40295^2 .

It is a cyclic number.

It is not a de Polignac number, because 3978459701 - 2⁶ = 3978459637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3978459781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989229850 + 1989229851.

It is an arithmetic number, because the mean of its divisors is an integer number (1989229851).

Almost surely, 2^3978459701 is an apocalyptic number.

It is an amenable number.

3978459701 is a deficient number, since it is larger than the sum of its proper divisors (1).

3978459701 is an equidigital number, since it uses as much as digits as its factorization.

3978459701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 3978459701 is about 63075.0323107329. The cubic root of 3978459701 is about 1584.5464973822.

The spelling of 3978459701 in words is "three billion, nine hundred seventy-eight million, four hundred fifty-nine thousand, seven hundred one".