10889987 has 2 divisors, whose sum is σ = 10889988. Its totient is φ = 10889986.

The previous prime is 10889981. The next prime is 10890023. The reversal of 10889987 is 78998801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10889987 - 2¹² = 10885891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10889981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5444993 + 5444994.

It is an arithmetic number, because the mean of its divisors is an integer number (5444994).

Almost surely, 2^10889987 is an apocalyptic number.

10889987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10889987 is an equidigital number, since it uses as much as digits as its factorization.

10889987 is an evil number, because the sum of its binary digits is even.

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

The square root of 10889987 is about 3299.9980303024. The cubic root of 10889987 is about 221.6541092503.

The spelling of 10889987 in words is "ten million, eight hundred eighty-nine thousand, nine hundred eighty-seven".