1228246249 has 2 divisors, whose sum is σ = 1228246250. Its totient is φ = 1228246248.

The previous prime is 1228246213. The next prime is 1228246273. The reversal of 1228246249 is 9426428221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076168025 + 152078224 = 32805^2 + 12332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228246249 - 2⁷ = 1228246121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228246049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614123124 + 614123125.

It is an arithmetic number, because the mean of its divisors is an integer number (614123125).

Almost surely, 2^1228246249 is an apocalyptic number.

It is an amenable number.

1228246249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228246249 is an equidigital number, since it uses as much as digits as its factorization.

1228246249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 1228246249 is about 35046.3443029369. The cubic root of 1228246249 is about 1070.9318022218.

The spelling of 1228246249 in words is "one billion, two hundred twenty-eight million, two hundred forty-six thousand, two hundred forty-nine".