229745 has 4 divisors (see below), whose sum is σ = 275700. Its totient is φ = 183792.

The previous prime is 229739. The next prime is 229751. The reversal of 229745 is 547922.

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

It is an interprime number because it is at equal distance from previous prime (229739) and next prime (229751).

It can be written as a sum of positive squares in 2 ways, for example, as 142129 + 87616 = 377^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 229745 - 2⁶ = 229681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22970 + ... + 22979.

It is an arithmetic number, because the mean of its divisors is an integer number (68925).

229745 is a Friedman number, since it can be written as (22+9^4*7)*5, using all its digits and the basic arithmetic operations.

2²²⁹⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

229745 is a deficient number, since it is larger than the sum of its proper divisors (45955).

229745 is an equidigital number, since it uses as much as digits as its factorization.

229745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45954.

The product of its digits is 5040, while the sum is 29.

The square root of 229745 is about 479.3172227242. The cubic root of 229745 is about 61.2466053929.

The spelling of 229745 in words is "two hundred twenty-nine thousand, seven hundred forty-five".