189000393 has 8 divisors (see below), whose sum is σ = 252068256. Its totient is φ = 125966400.

The previous prime is 189000349. The next prime is 189000401. The reversal of 189000393 is 393000981.

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

It is not a de Polignac number, because 189000393 - 2²⁶ = 121891529 is a prime.

It is a super-3 number, since 3×189000393³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (189000313) 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, 10858 + ... + 22268.

It is an arithmetic number, because the mean of its divisors is an integer number (31508532).

Almost surely, 2^189000393 is an apocalyptic number.

It is an amenable number.

189000393 is a deficient number, since it is larger than the sum of its proper divisors (63067863).

189000393 is a wasteful number, since it uses less digits than its factorization.

189000393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 189000393 is about 13747.7413781319. The cubic root of 189000393 is about 573.8797525997.

The spelling of 189000393 in words is "one hundred eighty-nine million, three hundred ninety-three", and thus it is an aban number.