229823987 has 4 divisors (see below), whose sum is σ = 237237696. Its totient is φ = 222410280.

The previous prime is 229823959. The next prime is 229824011. The reversal of 229823987 is 789328922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229823987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229823917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3706808 + ... + 3706869.

It is an arithmetic number, because the mean of its divisors is an integer number (59309424).

Almost surely, 2^229823987 is an apocalyptic number.

229823987 is a deficient number, since it is larger than the sum of its proper divisors (7413709).

229823987 is an equidigital number, since it uses as much as digits as its factorization.

229823987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413708.

The product of its digits is 870912, while the sum is 50.

The square root of 229823987 is about 15159.9468006982. The cubic root of 229823987 is about 612.5362350908.

The spelling of 229823987 in words is "two hundred twenty-nine million, eight hundred twenty-three thousand, nine hundred eighty-seven".