228238999 has 2 divisors, whose sum is σ = 228239000. Its totient is φ = 228238998.

The previous prime is 228238949. The next prime is 228239021. The reversal of 228238999 is 999832822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228238999 - 2¹⁷ = 228107927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228238949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114119499 + 114119500.

It is an arithmetic number, because the mean of its divisors is an integer number (114119500).

Almost surely, 2^228238999 is an apocalyptic number.

228238999 is a deficient number, since it is larger than the sum of its proper divisors (1).

228238999 is an equidigital number, since it uses as much as digits as its factorization.

228238999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 228238999 is about 15107.5808453902. The cubic root of 228238999 is about 611.1248607509.

The spelling of 228238999 in words is "two hundred twenty-eight million, two hundred thirty-eight thousand, nine hundred ninety-nine".