128369393 has 8 divisors (see below), whose sum is σ = 129454080. Its totient is φ = 127288800.

The previous prime is 128369383. The next prime is 128369407. The reversal of 128369393 is 393963821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128369393 - 2¹⁸ = 128107249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128369333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99728 + ... + 101006.

It is an arithmetic number, because the mean of its divisors is an integer number (16181760).

Almost surely, 2^128369393 is an apocalyptic number.

It is an amenable number.

128369393 is a deficient number, since it is larger than the sum of its proper divisors (1084687).

128369393 is a wasteful number, since it uses less digits than its factorization.

128369393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047.

The product of its digits is 209952, while the sum is 44.

The square root of 128369393 is about 11330.0217563781. The cubic root of 128369393 is about 504.4527522813.

The spelling of 128369393 in words is "one hundred twenty-eight million, three hundred sixty-nine thousand, three hundred ninety-three".