128389367 has 2 divisors, whose sum is σ = 128389368. Its totient is φ = 128389366.

The previous prime is 128389363. The next prime is 128389439. The reversal of 128389367 is 763983821.

It is a weak prime.

It is an emirp because it is prime and its reverse (763983821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128389367 - 2² = 128389363 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128389363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64194683 + 64194684.

It is an arithmetic number, because the mean of its divisors is an integer number (64194684).

Almost surely, 2^128389367 is an apocalyptic number.

128389367 is a deficient number, since it is larger than the sum of its proper divisors (1).

128389367 is an equidigital number, since it uses as much as digits as its factorization.

128389367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 128389367 is about 11330.9031855364. The cubic root of 128389367 is about 504.4789148436.

The spelling of 128389367 in words is "one hundred twenty-eight million, three hundred eighty-nine thousand, three hundred sixty-seven".