111488999 has 2 divisors, whose sum is σ = 111489000. Its totient is φ = 111488998.

The previous prime is 111488977. The next prime is 111489013. The reversal of 111488999 is 999884111.

It is a strong prime.

It is an emirp because it is prime and its reverse (999884111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111488999 - 2¹⁶ = 111423463 is a prime.

It is a super-3 number, since 3×111488999³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111482999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55744499 + 55744500.

It is an arithmetic number, because the mean of its divisors is an integer number (55744500).

Almost surely, 2^111488999 is an apocalyptic number.

111488999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111488999 is an equidigital number, since it uses as much as digits as its factorization.

111488999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 50.

The square root of 111488999 is about 10558.8351156745. The cubic root of 111488999 is about 481.2942487228.

The spelling of 111488999 in words is "one hundred eleven million, four hundred eighty-eight thousand, nine hundred ninety-nine".