229812987 has 16 divisors (see below), whose sum is σ = 338549760. Its totient is φ = 137926272.

The previous prime is 229812983. The next prime is 229812997. The reversal of 229812987 is 789218922.

It is not a de Polignac number, because 229812987 - 2² = 229812983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229812983) 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, 96787 + ... + 99132.

It is an arithmetic number, because the mean of its divisors is an integer number (21159360).

Almost surely, 2^229812987 is an apocalyptic number.

229812987 is a deficient number, since it is larger than the sum of its proper divisors (108736773).

229812987 is a wasteful number, since it uses less digits than its factorization.

229812987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195962.

The product of its digits is 290304, while the sum is 48.

The square root of 229812987 is about 15159.5839982501. The cubic root of 229812987 is about 612.5264623858.

The spelling of 229812987 in words is "two hundred twenty-nine million, eight hundred twelve thousand, nine hundred eighty-seven".