189427 has 4 divisors (see below), whose sum is σ = 216496. Its totient is φ = 162360.

The previous prime is 189421. The next prime is 189433. The reversal of 189427 is 724981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724981 = 71 ⋅10211.

It is an interprime number because it is at equal distance from previous prime (189421) and next prime (189433).

It is a cyclic number.

It is not a de Polignac number, because 189427 - 2¹¹ = 187379 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (189421) 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, 13524 + ... + 13537.

It is an arithmetic number, because the mean of its divisors is an integer number (54124).

2¹⁸⁹⁴²⁷ is an apocalyptic number.

189427 is a deficient number, since it is larger than the sum of its proper divisors (27069).

189427 is an equidigital number, since it uses as much as digits as its factorization.

189427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27068.

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

The square root of 189427 is about 435.2321219763. The cubic root of 189427 is about 57.4311210519.

It can be divided in two parts, 189 and 427, that added together give a palindrome (616).

The spelling of 189427 in words is "one hundred eighty-nine thousand, four hundred twenty-seven".