89121886 has 24 divisors (see below), whose sum is σ = 159132600. Its totient is φ = 37305072.

The previous prime is 89121821. The next prime is 89121887. The reversal of 89121886 is 68812198.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89121887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6361 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (6630525).

Almost surely, 2^89121886 is an apocalyptic number.

89121886 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

89121886 is a deficient number, since it is larger than the sum of its proper divisors (70010714).

89121886 is a wasteful number, since it uses less digits than its factorization.

89121886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21208 (or 21201 counting only the distinct ones).

The product of its digits is 55296, while the sum is 43.

The square root of 89121886 is about 9440.4388669172. The cubic root of 89121886 is about 446.6782330363.

The spelling of 89121886 in words is "eighty-nine million, one hundred twenty-one thousand, eight hundred eighty-six".