389448739091 has 2 divisors, whose sum is σ = 389448739092. Its totient is φ = 389448739090.

The previous prime is 389448739087. The next prime is 389448739153. The reversal of 389448739091 is 190937844983.

It is a weak prime.

It is an emirp because it is prime and its reverse (190937844983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389448739091 - 2² = 389448739087 is a prime.

It is not a weakly prime, because it can be changed into another prime (389448739021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194724369545 + 194724369546.

It is an arithmetic number, because the mean of its divisors is an integer number (194724369546).

Almost surely, 2^389448739091 is an apocalyptic number.

389448739091 is a deficient number, since it is larger than the sum of its proper divisors (1).

389448739091 is an equidigital number, since it uses as much as digits as its factorization.

389448739091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 389448739091 in words is "three hundred eighty-nine billion, four hundred forty-eight million, seven hundred thirty-nine thousand, ninety-one".