228469399 has 2 divisors, whose sum is σ = 228469400. Its totient is φ = 228469398.

The previous prime is 228469393. The next prime is 228469429. The reversal of 228469399 is 993964822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228469399 - 2²¹ = 226372247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228469393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114234699 + 114234700.

It is an arithmetic number, because the mean of its divisors is an integer number (114234700).

Almost surely, 2^228469399 is an apocalyptic number.

228469399 is a deficient number, since it is larger than the sum of its proper divisors (1).

228469399 is an equidigital number, since it uses as much as digits as its factorization.

228469399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 228469399 is about 15115.2042328246. The cubic root of 228469399 is about 611.3304286225.

The spelling of 228469399 in words is "two hundred twenty-eight million, four hundred sixty-nine thousand, three hundred ninety-nine".