110989987 has 2 divisors, whose sum is σ = 110989988. Its totient is φ = 110989986.

The previous prime is 110989981. The next prime is 110990021. The reversal of 110989987 is 789989011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110989987 - 2³ = 110989979 is a prime.

It is not a weakly prime, because it can be changed into another prime (110989981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55494993 + 55494994.

It is an arithmetic number, because the mean of its divisors is an integer number (55494994).

Almost surely, 2^110989987 is an apocalyptic number.

110989987 is a deficient number, since it is larger than the sum of its proper divisors (1).

110989987 is an equidigital number, since it uses as much as digits as its factorization.

110989987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 52.

The square root of 110989987 is about 10535.1785461852. The cubic root of 110989987 is about 480.5751020555.

The spelling of 110989987 in words is "one hundred ten million, nine hundred eighty-nine thousand, nine hundred eighty-seven".