1123560899 has 2 divisors, whose sum is σ = 1123560900. Its totient is φ = 1123560898.

The previous prime is 1123560859. The next prime is 1123560941. The reversal of 1123560899 is 9980653211.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9980653211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123560899 - 2⁸ = 1123560643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123560859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561780449 + 561780450.

It is an arithmetic number, because the mean of its divisors is an integer number (561780450).

Almost surely, 2^1123560899 is an apocalyptic number.

1123560899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123560899 is an equidigital number, since it uses as much as digits as its factorization.

1123560899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1123560899 is about 33519.5599463955. The cubic root of 1123560899 is about 1039.5982481147.

The spelling of 1123560899 in words is "one billion, one hundred twenty-three million, five hundred sixty thousand, eight hundred ninety-nine".