228899819 has 2 divisors, whose sum is σ = 228899820. Its totient is φ = 228899818.

The previous prime is 228899809. The next prime is 228899851. The reversal of 228899819 is 918998822.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228899819 is a prime.

It is a super-2 number, since 2×228899819² = 104790254276465522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228899809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114449909 + 114449910.

It is an arithmetic number, because the mean of its divisors is an integer number (114449910).

Almost surely, 2^228899819 is an apocalyptic number.

228899819 is a deficient number, since it is larger than the sum of its proper divisors (1).

228899819 is an equidigital number, since it uses as much as digits as its factorization.

228899819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 56.

The square root of 228899819 is about 15129.4355149159. The cubic root of 228899819 is about 611.7140887222.

The spelling of 228899819 in words is "two hundred twenty-eight million, eight hundred ninety-nine thousand, eight hundred nineteen".