87288229 has 4 divisors (see below), whose sum is σ = 99757984. Its totient is φ = 74818476.

The previous prime is 87288211. The next prime is 87288233. The reversal of 87288229 is 92288278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87288229 - 2¹⁷ = 87157157 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 (87288239) 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, 6234867 + ... + 6234880.

It is an arithmetic number, because the mean of its divisors is an integer number (24939496).

Almost surely, 2^87288229 is an apocalyptic number.

It is an amenable number.

87288229 is a deficient number, since it is larger than the sum of its proper divisors (12469755).

87288229 is a wasteful number, since it uses less digits than its factorization.

87288229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469754.

The product of its digits is 258048, while the sum is 46.

The square root of 87288229 is about 9342.8169734829. The cubic root of 87288229 is about 443.5935547435.

The spelling of 87288229 in words is "eighty-seven million, two hundred eighty-eight thousand, two hundred twenty-nine".