228407449 has 2 divisors, whose sum is σ = 228407450. Its totient is φ = 228407448.

The previous prime is 228407371. The next prime is 228407453. The reversal of 228407449 is 944704822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182439049 + 45968400 = 13507^2 + 6780^2 .

It is a cyclic number.

It is not a de Polignac number, because 228407449 - 2⁷ = 228407321 is a prime.

It is not a weakly prime, because it can be changed into another prime (228407149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114203724 + 114203725.

It is an arithmetic number, because the mean of its divisors is an integer number (114203725).

Almost surely, 2^228407449 is an apocalyptic number.

It is an amenable number.

228407449 is a deficient number, since it is larger than the sum of its proper divisors (1).

228407449 is an equidigital number, since it uses as much as digits as its factorization.

228407449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 228407449 is about 15113.1548327938. The cubic root of 228407449 is about 611.2751690797.

The spelling of 228407449 in words is "two hundred twenty-eight million, four hundred seven thousand, four hundred forty-nine".