229691 has 16 divisors (see below), whose sum is σ = 303360. Its totient is φ = 168480.

The previous prime is 229681. The next prime is 229693. The reversal of 229691 is 196922.

229691 is nontrivially palindromic in base 12.

229691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 229691 - 2⁶ = 229627 is a prime.

It is a Duffinian number.

229691 is an undulating number in base 12.

It is not an unprimeable number, because it can be changed into a prime (229693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385 + ... + 1541.

It is an arithmetic number, because the mean of its divisors is an integer number (18960).

2²²⁹⁶⁹¹ is an apocalyptic number.

229691 is a deficient number, since it is larger than the sum of its proper divisors (73669).

229691 is a wasteful number, since it uses less digits than its factorization.

229691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its digits is 1944, while the sum is 29.

The square root of 229691 is about 479.2608892868. The cubic root of 229691 is about 61.2418064842.

The spelling of 229691 in words is "two hundred twenty-nine thousand, six hundred ninety-one".