990110887 has 2 divisors, whose sum is σ = 990110888. Its totient is φ = 990110886.

The previous prime is 990110809. The next prime is 990110941. The reversal of 990110887 is 788011099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990110887 - 2¹⁵ = 990078119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990110987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495055443 + 495055444.

It is an arithmetic number, because the mean of its divisors is an integer number (495055444).

Almost surely, 2^990110887 is an apocalyptic number.

990110887 is a deficient number, since it is larger than the sum of its proper divisors (1).

990110887 is an equidigital number, since it uses as much as digits as its factorization.

990110887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 990110887 is about 31466.0275058673. The cubic root of 990110887 is about 996.6927028442.

The spelling of 990110887 in words is "nine hundred ninety million, one hundred ten thousand, eight hundred eighty-seven".