10989887 has 2 divisors, whose sum is σ = 10989888. Its totient is φ = 10989886.

The previous prime is 10989859. The next prime is 10989889. The reversal of 10989887 is 78898901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10989887 - 2¹⁰ = 10988863 is a prime.

Together with 10989889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10989889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5494943 + 5494944.

It is an arithmetic number, because the mean of its divisors is an integer number (5494944).

Almost surely, 2^10989887 is an apocalyptic number.

10989887 is a deficient number, since it is larger than the sum of its proper divisors (1).

10989887 is an equidigital number, since it uses as much as digits as its factorization.

10989887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 10989887 is about 3315.0998476667. The cubic root of 10989887 is about 222.3298332791.

The spelling of 10989887 in words is "ten million, nine hundred eighty-nine thousand, eight hundred eighty-seven".