111092987 has 2 divisors, whose sum is σ = 111092988. Its totient is φ = 111092986.

The previous prime is 111092963. The next prime is 111092999. The reversal of 111092987 is 789290111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111092987 - 2²⁰ = 110044411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111092987.

It is not a weakly prime, because it can be changed into another prime (111092957) 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, 55546493 + 55546494.

It is an arithmetic number, because the mean of its divisors is an integer number (55546494).

Almost surely, 2^111092987 is an apocalyptic number.

111092987 is a deficient number, since it is larger than the sum of its proper divisors (1).

111092987 is an equidigital number, since it uses as much as digits as its factorization.

111092987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 111092987 is about 10540.0657967586. The cubic root of 111092987 is about 480.7237158563.

The spelling of 111092987 in words is "one hundred eleven million, ninety-two thousand, nine hundred eighty-seven".