228120499 has 2 divisors, whose sum is σ = 228120500. Its totient is φ = 228120498.

The previous prime is 228120493. The next prime is 228120511. The reversal of 228120499 is 994021822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228120499 - 2⁹ = 228119987 is a prime.

It is not a weakly prime, because it can be changed into another prime (228120493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114060249 + 114060250.

It is an arithmetic number, because the mean of its divisors is an integer number (114060250).

Almost surely, 2^228120499 is an apocalyptic number.

228120499 is a deficient number, since it is larger than the sum of its proper divisors (1).

228120499 is an equidigital number, since it uses as much as digits as its factorization.

228120499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 228120499 is about 15103.6584640941. The cubic root of 228120499 is about 611.0190786060.

The spelling of 228120499 in words is "two hundred twenty-eight million, one hundred twenty thousand, four hundred ninety-nine".