229405 has 16 divisors (see below), whose sum is σ = 310464. Its totient is φ = 161280.

The previous prime is 229403. The next prime is 229409. The reversal of 229405 is 504922.

It is a happy number.

It is not a de Polignac number, because 229405 - 2¹ = 229403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2317 + ... + 2413.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2²²⁹⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

229405 is a deficient number, since it is larger than the sum of its proper divisors (81059).

229405 is a wasteful number, since it uses less digits than its factorization.

229405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 229405 is about 478.9624202377. The cubic root of 229405 is about 61.2163774928.

The spelling of 229405 in words is "two hundred twenty-nine thousand, four hundred five".