247189 has 4 divisors (see below), whose sum is σ = 253260. Its totient is φ = 241120.

The previous prime is 247183. The next prime is 247193. The reversal of 247189 is 981742.

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 119025 + 128164 = 345^2 + 358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247189 is a prime.

It is a super-2 number, since 2×247189² = 122204803442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247183) 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, 2974 + ... + 3055.

It is an arithmetic number, because the mean of its divisors is an integer number (63315).

2²⁴⁷¹⁸⁹ is an apocalyptic number.

It is an amenable number.

247189 is a deficient number, since it is larger than the sum of its proper divisors (6071).

247189 is an equidigital number, since it uses as much as digits as its factorization.

247189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070.

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

The square root of 247189 is about 497.1810535409. The cubic root of 247189 is about 62.7590527830.

The spelling of 247189 in words is "two hundred forty-seven thousand, one hundred eighty-nine".