1244027947 has 2 divisors, whose sum is σ = 1244027948. Its totient is φ = 1244027946.

The previous prime is 1244027881. The next prime is 1244027957. The reversal of 1244027947 is 7497204421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244027947 - 2¹¹ = 1244025899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244027957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622013973 + 622013974.

It is an arithmetic number, because the mean of its divisors is an integer number (622013974).

Almost surely, 2^1244027947 is an apocalyptic number.

1244027947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244027947 is an equidigital number, since it uses as much as digits as its factorization.

1244027947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 1244027947 is about 35270.7803571171. The cubic root of 1244027947 is about 1075.4990859407.

The spelling of 1244027947 in words is "one billion, two hundred forty-four million, twenty-seven thousand, nine hundred forty-seven".