189896589 has 8 divisors (see below), whose sum is σ = 281328320. Its totient is φ = 126597708.

The previous prime is 189896587. The next prime is 189896653. The reversal of 189896589 is 985698981.

It is not a de Polignac number, because 189896589 - 2¹ = 189896587 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189896587) 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, 3516577 + ... + 3516630.

It is an arithmetic number, because the mean of its divisors is an integer number (35166040).

Almost surely, 2^189896589 is an apocalyptic number.

It is an amenable number.

189896589 is a deficient number, since it is larger than the sum of its proper divisors (91431731).

189896589 is an equidigital number, since it uses as much as digits as its factorization.

189896589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033216 (or 7033210 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 189896589 is about 13780.2971303234. The cubic root of 189896589 is about 574.7853908622.

The spelling of 189896589 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, five hundred eighty-nine".