228099999 has 16 divisors (see below), whose sum is σ = 322328160. Its totient is φ = 142986240.

The previous prime is 228099983. The next prime is 228100007. The reversal of 228099999 is 999990822.

It is not a de Polignac number, because 228099999 - 2⁴ = 228099983 is a prime.

228099999 is a modest number, since divided by 99999 gives 2280 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228099919) 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, 105469 + ... + 107609.

It is an arithmetic number, because the mean of its divisors is an integer number (20145510).

Almost surely, 2^228099999 is an apocalyptic number.

228099999 is a deficient number, since it is larger than the sum of its proper divisors (94228161).

228099999 is a wasteful number, since it uses less digits than its factorization.

228099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 228099999 is about 15102.9798053232. The cubic root of 228099999 is about 611.0007750246. Note that the first 3 decimals are identical.

The spelling of 228099999 in words is "two hundred twenty-eight million, ninety-nine thousand, nine hundred ninety-nine".