1122445447 has 2 divisors, whose sum is σ = 1122445448. Its totient is φ = 1122445446.

The previous prime is 1122445409. The next prime is 1122445481. The reversal of 1122445447 is 7445442211.

It is an a-pointer prime, because the next prime (1122445481) can be obtained adding 1122445447 to its sum of digits (34).

It is a strong prime.

It is an emirp because it is prime and its reverse (7445442211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122445447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122445847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561222723 + 561222724.

It is an arithmetic number, because the mean of its divisors is an integer number (561222724).

Almost surely, 2^1122445447 is an apocalyptic number.

1122445447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122445447 is an equidigital number, since it uses as much as digits as its factorization.

1122445447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 34.

The square root of 1122445447 is about 33502.9169924053. The cubic root of 1122445447 is about 1039.2541024291.

Adding to 1122445447 its reverse (7445442211), we get a palindrome (8567887658).

The spelling of 1122445447 in words is "one billion, one hundred twenty-two million, four hundred forty-five thousand, four hundred forty-seven".