427289 has 4 divisors (see below), whose sum is σ = 432180. Its totient is φ = 422400.

The previous prime is 427283. The next prime is 427307. The reversal of 427289 is 982724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160000 + 267289 = 400^2 + 517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427283) 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, 2312 + ... + 2489.

It is an arithmetic number, because the mean of its divisors is an integer number (108045).

2⁴²⁷²⁸⁹ is an apocalyptic number.

It is an amenable number.

427289 is a deficient number, since it is larger than the sum of its proper divisors (4891).

427289 is an equidigital number, since it uses as much as digits as its factorization.

427289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its digits is 8064, while the sum is 32.

The square root of 427289 is about 653.6734658834. The cubic root of 427289 is about 75.3194669094.

The spelling of 427289 in words is "four hundred twenty-seven thousand, two hundred eighty-nine".