128394983 has 2 divisors, whose sum is σ = 128394984. Its totient is φ = 128394982.

The previous prime is 128394953. The next prime is 128394997. The reversal of 128394983 is 389493821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (389493821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128394983 - 2²⁰ = 127346407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128394943) 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, 64197491 + 64197492.

It is an arithmetic number, because the mean of its divisors is an integer number (64197492).

Almost surely, 2^128394983 is an apocalyptic number.

128394983 is a deficient number, since it is larger than the sum of its proper divisors (1).

128394983 is an equidigital number, since it uses as much as digits as its factorization.

128394983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 128394983 is about 11331.1510006707. The cubic root of 128394983 is about 504.4862703651.

The spelling of 128394983 in words is "one hundred twenty-eight million, three hundred ninety-four thousand, nine hundred eighty-three".