228461669 has 2 divisors, whose sum is σ = 228461670. Its totient is φ = 228461668.

The previous prime is 228461663. The next prime is 228461671. The reversal of 228461669 is 966164822.

228461669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175244644 + 53217025 = 13238^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 228461669 - 2²⁰ = 227413093 is a prime.

It is a super-2 number, since 2×228461669² = 104389468404531122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 228461671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228461663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114230834 + 114230835.

It is an arithmetic number, because the mean of its divisors is an integer number (114230835).

Almost surely, 2^228461669 is an apocalyptic number.

It is an amenable number.

228461669 is a deficient number, since it is larger than the sum of its proper divisors (1).

228461669 is an equidigital number, since it uses as much as digits as its factorization.

228461669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 228461669 is about 15114.9485278647. The cubic root of 228461669 is about 611.3235339902.

The spelling of 228461669 in words is "two hundred twenty-eight million, four hundred sixty-one thousand, six hundred sixty-nine".