189247 has 4 divisors (see below), whose sum is σ = 191296. Its totient is φ = 187200.

The previous prime is 189239. The next prime is 189251. The reversal of 189247 is 742981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189247 - 2³ = 189239 is a prime.

It is a super-3 number, since 3×189247³ = 20333318604516669, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879 + ... + 1072.

It is an arithmetic number, because the mean of its divisors is an integer number (47824).

2¹⁸⁹²⁴⁷ is an apocalyptic number.

189247 is a deficient number, since it is larger than the sum of its proper divisors (2049).

189247 is an equidigital number, since it uses as much as digits as its factorization.

189247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048.

The product of its digits is 4032, while the sum is 31.

The square root of 189247 is about 435.0252866214. The cubic root of 189247 is about 57.4129242832.

The spelling of 189247 in words is "one hundred eighty-nine thousand, two hundred forty-seven".