128983847 has 2 divisors, whose sum is σ = 128983848. Its totient is φ = 128983846.

The previous prime is 128983823. The next prime is 128983849. The reversal of 128983847 is 748389821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128983847 - 2¹² = 128979751 is a prime.

Together with 128983849, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 128983795 and 128983804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128983849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64491923 + 64491924.

It is an arithmetic number, because the mean of its divisors is an integer number (64491924).

Almost surely, 2^128983847 is an apocalyptic number.

128983847 is a deficient number, since it is larger than the sum of its proper divisors (1).

128983847 is an equidigital number, since it uses as much as digits as its factorization.

128983847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The square root of 128983847 is about 11357.1055731643. The cubic root of 128983847 is about 505.2563440565.

The spelling of 128983847 in words is "one hundred twenty-eight million, nine hundred eighty-three thousand, eight hundred forty-seven".