389999996905901 has 2 divisors, whose sum is σ = 389999996905902. Its totient is φ = 389999996905900.

The previous prime is 389999996905889. The next prime is 389999996905907. The reversal of 389999996905901 is 109509699999983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362080387128100 + 27919609777801 = 19028410^2 + 5283901^2 .

It is a cyclic number.

It is not a de Polignac number, because 389999996905901 - 2¹⁸ = 389999996643757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389999996905795 and 389999996905804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389999996905907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194999998452950 + 194999998452951.

It is an arithmetic number, because the mean of its divisors is an integer number (194999998452951).

Almost surely, 2^{389999996905901} is an apocalyptic number.

It is an amenable number.

389999996905901 is a deficient number, since it is larger than the sum of its proper divisors (1).

389999996905901 is an equidigital number, since it uses as much as digits as its factorization.

389999996905901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30993639120, while the sum is 95.

The spelling of 389999996905901 in words is "three hundred eighty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-six million, nine hundred five thousand, nine hundred one".