228415669 has 2 divisors, whose sum is σ = 228415670. Its totient is φ = 228415668.

The previous prime is 228415667. The next prime is 228415679. The reversal of 228415669 is 966514822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138886225 + 89529444 = 11785^2 + 9462^2 .

It is a cyclic number.

It is not a de Polignac number, because 228415669 - 2¹ = 228415667 is a prime.

It is a super-2 number, since 2×228415669² = 104347435689435122, which contains 22 as substring.

Together with 228415667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228415667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114207834 + 114207835.

It is an arithmetic number, because the mean of its divisors is an integer number (114207835).

Almost surely, 2^228415669 is an apocalyptic number.

It is an amenable number.

228415669 is a deficient number, since it is larger than the sum of its proper divisors (1).

228415669 is an equidigital number, since it uses as much as digits as its factorization.

228415669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 228415669 is about 15113.4267788612. The cubic root of 228415669 is about 611.2825019136.

The spelling of 228415669 in words is "two hundred twenty-eight million, four hundred fifteen thousand, six hundred sixty-nine".