11423999089 has 2 divisors, whose sum is σ = 11423999090. Its totient is φ = 11423999088.

The previous prime is 11423999021. The next prime is 11423999101. The reversal of 11423999089 is 98099932411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11276740864 + 147258225 = 106192^2 + 12135^2 .

It is a cyclic number.

It is not a de Polignac number, because 11423999089 - 2¹¹ = 11423997041 is a prime.

It is not a weakly prime, because it can be changed into another prime (11423999989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5711999544 + 5711999545.

It is an arithmetic number, because the mean of its divisors is an integer number (5711999545).

Almost surely, 2^11423999089 is an apocalyptic number.

It is an amenable number.

11423999089 is a deficient number, since it is larger than the sum of its proper divisors (1).

11423999089 is an equidigital number, since it uses as much as digits as its factorization.

11423999089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 11423999089 in words is "eleven billion, four hundred twenty-three million, nine hundred ninety-nine thousand, eighty-nine".