228263839 has 2 divisors, whose sum is σ = 228263840. Its totient is φ = 228263838.

The previous prime is 228263837. The next prime is 228263857. The reversal of 228263839 is 938362822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228263839 - 2¹ = 228263837 is a prime.

Together with 228263837, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 228263795 and 228263804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228263837) 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, 114131919 + 114131920.

It is an arithmetic number, because the mean of its divisors is an integer number (114131920).

Almost surely, 2^228263839 is an apocalyptic number.

228263839 is a deficient number, since it is larger than the sum of its proper divisors (1).

228263839 is an equidigital number, since it uses as much as digits as its factorization.

228263839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 228263839 is about 15108.4029268484. The cubic root of 228263839 is about 611.1470301887.

The spelling of 228263839 in words is "two hundred twenty-eight million, two hundred sixty-three thousand, eight hundred thirty-nine".