111995489 has 2 divisors, whose sum is σ = 111995490. Its totient is φ = 111995488.

The previous prime is 111995483. The next prime is 111995503. The reversal of 111995489 is 984599111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86341264 + 25654225 = 9292^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 111995489 - 2²⁴ = 95218273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111995483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55997744 + 55997745.

It is an arithmetic number, because the mean of its divisors is an integer number (55997745).

Almost surely, 2^111995489 is an apocalyptic number.

It is an amenable number.

111995489 is a deficient number, since it is larger than the sum of its proper divisors (1).

111995489 is an equidigital number, since it uses as much as digits as its factorization.

111995489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 47.

The square root of 111995489 is about 10582.7921173951. The cubic root of 111995489 is about 482.0219812293.

The spelling of 111995489 in words is "one hundred eleven million, nine hundred ninety-five thousand, four hundred eighty-nine".