228838443469 has 2 divisors, whose sum is σ = 228838443470. Its totient is φ = 228838443468.

The previous prime is 228838443439. The next prime is 228838443511. The reversal of 228838443469 is 964344838822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139754102569 + 89084340900 = 373837^2 + 298470^2 .

It is a cyclic number.

It is not a de Polignac number, because 228838443469 - 2¹³ = 228838435277 is a prime.

It is a super-2 number, since 2×228838443469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228838443439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114419221734 + 114419221735.

It is an arithmetic number, because the mean of its divisors is an integer number (114419221735).

Almost surely, 2^228838443469 is an apocalyptic number.

It is an amenable number.

228838443469 is a deficient number, since it is larger than the sum of its proper divisors (1).

228838443469 is an equidigital number, since it uses as much as digits as its factorization.

228838443469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63700992, while the sum is 61.

The spelling of 228838443469 in words is "two hundred twenty-eight billion, eight hundred thirty-eight million, four hundred forty-three thousand, four hundred sixty-nine".