228868439 has 2 divisors, whose sum is σ = 228868440. Its totient is φ = 228868438.

The previous prime is 228868411. The next prime is 228868457. The reversal of 228868439 is 934868822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228868439 - 2²⁰ = 227819863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228868459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114434219 + 114434220.

It is an arithmetic number, because the mean of its divisors is an integer number (114434220).

Almost surely, 2^228868439 is an apocalyptic number.

228868439 is a deficient number, since it is larger than the sum of its proper divisors (1).

228868439 is an equidigital number, since it uses as much as digits as its factorization.

228868439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327104, while the sum is 50.

The square root of 228868439 is about 15128.3984281219. The cubic root of 228868439 is about 611.6861340396.

The spelling of 228868439 in words is "two hundred twenty-eight million, eight hundred sixty-eight thousand, four hundred thirty-nine".