89889866 has 16 divisors (see below), whose sum is σ = 150514848. Its totient is φ = 39908400.

The previous prime is 89889857. The next prime is 89889871. The reversal of 89889866 is 66898898.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 89889799 and 89889808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46565 + ... + 48456.

It is an arithmetic number, because the mean of its divisors is an integer number (9407178).

Almost surely, 2^89889866 is an apocalyptic number.

89889866 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

89889866 is a deficient number, since it is larger than the sum of its proper divisors (60624982).

89889866 is a wasteful number, since it uses less digits than its factorization.

89889866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95077.

The product of its digits is 11943936, while the sum is 62.

The square root of 89889866 is about 9481.0266321744. The cubic root of 89889866 is about 447.9576018815.

The spelling of 89889866 in words is "eighty-nine million, eight hundred eighty-nine thousand, eight hundred sixty-six".