3979174957409 has 2 divisors, whose sum is σ = 3979174957410. Its totient is φ = 3979174957408.

The previous prime is 3979174957379. The next prime is 3979174957427. The reversal of 3979174957409 is 9047594719793.

3979174957409 is digitally balanced in base 3, 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., 3716231629009 + 262943328400 = 1927753^2 + 512780^2 .

It is a cyclic number.

It is not a de Polignac number, because 3979174957409 - 2³² = 3974879990113 is a prime.

It is not a weakly prime, because it can be changed into another prime (3979174957909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989587478704 + 1989587478705.

It is an arithmetic number, because the mean of its divisors is an integer number (1989587478705).

Almost surely, 2^{3979174957409} is an apocalyptic number.

It is an amenable number.

3979174957409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979174957409 is an equidigital number, since it uses as much as digits as its factorization.

3979174957409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540101520, while the sum is 74.

The spelling of 3979174957409 in words is "three trillion, nine hundred seventy-nine billion, one hundred seventy-four million, nine hundred fifty-seven thousand, four hundred nine".