228557899 has 4 divisors (see below), whose sum is σ = 230914264. Its totient is φ = 226201536.

The previous prime is 228557891. The next prime is 228557929. The reversal of 228557899 is 998755822.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 228557899 - 2³ = 228557891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228557891) 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, 1178037 + ... + 1178230.

It is an arithmetic number, because the mean of its divisors is an integer number (57728566).

Almost surely, 2^228557899 is an apocalyptic number.

228557899 is a deficient number, since it is larger than the sum of its proper divisors (2356365).

228557899 is an equidigital number, since it uses as much as digits as its factorization.

228557899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356364.

The product of its digits is 3628800, while the sum is 55.

The square root of 228557899 is about 15118.1314652307. The cubic root of 228557899 is about 611.4093535010.

The spelling of 228557899 in words is "two hundred twenty-eight million, five hundred fifty-seven thousand, eight hundred ninety-nine".