229490 has 16 divisors (see below), whose sum is σ = 421848. Its totient is φ = 89856.

The previous prime is 229487. The next prime is 229499. The reversal of 229490 is 94922.

229490 = 38² + 39² + ... + 90².

It can be written as a sum of positive squares in 4 ways, for example, as 162409 + 67081 = 403^2 + 259^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (229499) 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 7 ways as a sum of consecutive naturals, for example, 314 + ... + 746.

2²²⁹⁴⁹⁰ is an apocalyptic number.

229490 is a deficient number, since it is larger than the sum of its proper divisors (192358).

229490 is a wasteful number, since it uses less digits than its factorization.

229490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

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

The square root of 229490 is about 479.0511454949. The cubic root of 229490 is about 61.2239372664.

It can be divided in two parts, 2 and 29490, that added together give a palindrome (29492).

The spelling of 229490 in words is "two hundred twenty-nine thousand, four hundred ninety".