229940 has 12 divisors (see below), whose sum is σ = 482916. Its totient is φ = 91968.

The previous prime is 229939. The next prime is 229949. The reversal of 229940 is 49922.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 119716 = 332^2 + 346^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229949) 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 3 ways as a sum of consecutive naturals, for example, 5729 + ... + 5768.

It is an arithmetic number, because the mean of its divisors is an integer number (40243).

2²²⁹⁹⁴⁰ is an apocalyptic number.

229940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229940 is an abundant number, since it is smaller than the sum of its proper divisors (252976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229940 is a wasteful number, since it uses less digits than its factorization.

229940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11506 (or 11504 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 229940 is about 479.5205939269. The cubic root of 229940 is about 61.2639285275.

The spelling of 229940 in words is "two hundred twenty-nine thousand, nine hundred forty".