10887889 has 4 divisors (see below), whose sum is σ = 10984356. Its totient is φ = 10791424.

The previous prime is 10887881. The next prime is 10887917. The reversal of 10887889 is 98878801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 10452289 = 660^2 + 3233^2 .

It is a cyclic number.

It is not a de Polignac number, because 10887889 - 2³ = 10887881 is a prime.

It is a super-2 number, since 2×10887889² = 237092253752642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10887881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48064 + ... + 48289.

It is an arithmetic number, because the mean of its divisors is an integer number (2746089).

Almost surely, 2^10887889 is an apocalyptic number.

It is an amenable number.

10887889 is a deficient number, since it is larger than the sum of its proper divisors (96467).

10887889 is an equidigital number, since it uses as much as digits as its factorization.

10887889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96466.

The product of its (nonzero) digits is 258048, while the sum is 49.

The square root of 10887889 is about 3299.6801360132. The cubic root of 10887889 is about 221.6398741495.

The spelling of 10887889 in words is "ten million, eight hundred eighty-seven thousand, eight hundred eighty-nine".