1227038489 has 2 divisors, whose sum is σ = 1227038490. Its totient is φ = 1227038488.

The previous prime is 1227038479. The next prime is 1227038509. The reversal of 1227038489 is 9848307221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733976464 + 493062025 = 27092^2 + 22205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227038489 - 2⁸ = 1227038233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1227038419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613519244 + 613519245.

It is an arithmetic number, because the mean of its divisors is an integer number (613519245).

Almost surely, 2^1227038489 is an apocalyptic number.

It is an amenable number.

1227038489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227038489 is an equidigital number, since it uses as much as digits as its factorization.

1227038489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1227038489 is about 35029.1091665203. The cubic root of 1227038489 is about 1070.5806639551.

The spelling of 1227038489 in words is "one billion, two hundred twenty-seven million, thirty-eight thousand, four hundred eighty-nine".