1121445439 has 2 divisors, whose sum is σ = 1121445440. Its totient is φ = 1121445438.

The previous prime is 1121445401. The next prime is 1121445463. The reversal of 1121445439 is 9345441211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121445439 - 2¹¹ = 1121443391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121445499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560722719 + 560722720.

It is an arithmetic number, because the mean of its divisors is an integer number (560722720).

Almost surely, 2^1121445439 is an apocalyptic number.

1121445439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121445439 is an equidigital number, since it uses as much as digits as its factorization.

1121445439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 1121445439 is about 33487.9894738397. The cubic root of 1121445439 is about 1038.9453803126.

The spelling of 1121445439 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, four hundred thirty-nine".