1227248993 has 2 divisors, whose sum is σ = 1227248994. Its totient is φ = 1227248992.

The previous prime is 1227248977. The next prime is 1227249011. The reversal of 1227248993 is 3998427221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1125803809 + 101445184 = 33553^2 + 10072^2 .

It is an emirp because it is prime and its reverse (3998427221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1227248993 - 2⁴ = 1227248977 is a prime.

It is a super-2 number, since 2×1227248993² = 3012280181639028098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1227248923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613624496 + 613624497.

It is an arithmetic number, because the mean of its divisors is an integer number (613624497).

Almost surely, 2^1227248993 is an apocalyptic number.

It is an amenable number.

1227248993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227248993 is an equidigital number, since it uses as much as digits as its factorization.

1227248993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 1227248993 is about 35032.1137386827. The cubic root of 1227248993 is about 1070.6418814388.

The spelling of 1227248993 in words is "one billion, two hundred twenty-seven million, two hundred forty-eight thousand, nine hundred ninety-three".