229987429 has 18 divisors (see below), whose sum is σ = 277129554. Its totient is φ = 190300320.

The previous prime is 229987391. The next prime is 229987447. The reversal of 229987429 is 924789922.

It can be written as a sum of positive squares in 3 ways, for example, as 23059204 + 206928225 = 4802^2 + 14385^2 .

It is a de Polignac number, because none of the positive numbers 2^k-229987429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229987489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38419 + ... + 43999.

Almost surely, 2^229987429 is an apocalyptic number.

229987429 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

229987429 is a deficient number, since it is larger than the sum of its proper divisors (47142125).

229987429 is an equidigital number, since it uses as much as digits as its factorization.

229987429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653 (or 5617 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 229987429 is about 15165.3364288432. The cubic root of 229987429 is about 612.6814047713.

The spelling of 229987429 in words is "two hundred twenty-nine million, nine hundred eighty-seven thousand, four hundred twenty-nine".