3989738417191 has 2 divisors, whose sum is σ = 3989738417192. Its totient is φ = 3989738417190.

The previous prime is 3989738417111. The next prime is 3989738417219. The reversal of 3989738417191 is 1917148379893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3989738417191 - 2¹⁷ = 3989738286119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3989738417191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3989738417111) 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, 1994869208595 + 1994869208596.

It is an arithmetic number, because the mean of its divisors is an integer number (1994869208596).

Almost surely, 2^{3989738417191} is an apocalyptic number.

3989738417191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989738417191 is an equidigital number, since it uses as much as digits as its factorization.

3989738417191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 70.

The spelling of 3989738417191 in words is "three trillion, nine hundred eighty-nine billion, seven hundred thirty-eight million, four hundred seventeen thousand, one hundred ninety-one".