89109866 has 32 divisors (see below), whose sum is σ = 146586240. Its totient is φ = 40493376.

The previous prime is 89109863. The next prime is 89109871. The reversal of 89109866 is 66890198.

It is a self number, because there is not a number n which added to its sum of digits gives 89109866.

It is not an unprimeable number, because it can be changed into a prime (89109863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88880 + ... + 89876.

It is an arithmetic number, because the mean of its divisors is an integer number (4580820).

Almost surely, 2^89109866 is an apocalyptic number.

89109866 is a deficient number, since it is larger than the sum of its proper divisors (57476374).

89109866 is a wasteful number, since it uses less digits than its factorization.

89109866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 89109866 is about 9439.8022225045. The cubic root of 89109866 is about 446.6581507497.

The spelling of 89109866 in words is "eighty-nine million, one hundred nine thousand, eight hundred sixty-six".