228688099 has 2 divisors, whose sum is σ = 228688100. Its totient is φ = 228688098.

The previous prime is 228688093. The next prime is 228688111. The reversal of 228688099 is 990886822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228688099 - 2⁵ = 228688067 is a prime.

It is not a weakly prime, because it can be changed into another prime (228688093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114344049 + 114344050.

It is an arithmetic number, because the mean of its divisors is an integer number (114344050).

Almost surely, 2^228688099 is an apocalyptic number.

228688099 is a deficient number, since it is larger than the sum of its proper divisors (1).

228688099 is an equidigital number, since it uses as much as digits as its factorization.

228688099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 228688099 is about 15122.4369398586. The cubic root of 228688099 is about 611.5254296856.

The spelling of 228688099 in words is "two hundred twenty-eight million, six hundred eighty-eight thousand, ninety-nine".