128444597 has 2 divisors, whose sum is σ = 128444598. Its totient is φ = 128444596.

The previous prime is 128444557. The next prime is 128444633. The reversal of 128444597 is 795444821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84897796 + 43546801 = 9214^2 + 6599^2 .

It is a cyclic number.

It is not a de Polignac number, because 128444597 - 2⁸ = 128444341 is a prime.

It is equal to p_7294787 and since 128444597 and 7294787 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128444527) 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, 64222298 + 64222299.

It is an arithmetic number, because the mean of its divisors is an integer number (64222299).

Almost surely, 2^128444597 is an apocalyptic number.

It is an amenable number.

128444597 is a deficient number, since it is larger than the sum of its proper divisors (1).

128444597 is an equidigital number, since it uses as much as digits as its factorization.

128444597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 128444597 is about 11333.3400637235. The cubic root of 128444597 is about 504.5512426820.

The spelling of 128444597 in words is "one hundred twenty-eight million, four hundred forty-four thousand, five hundred ninety-seven".