89090818 has 4 divisors (see below), whose sum is σ = 133636230. Its totient is φ = 44545408.

The previous prime is 89090801. The next prime is 89090819. The reversal of 89090818 is 81809098.

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

It can be written as a sum of positive squares in only one way, i.e., 78021889 + 11068929 = 8833^2 + 3327^2 .

It is not an unprimeable number, because it can be changed into a prime (89090819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22272703 + ... + 22272706.

Almost surely, 2^89090818 is an apocalyptic number.

89090818 is a deficient number, since it is larger than the sum of its proper divisors (44545412).

89090818 is a wasteful number, since it uses less digits than its factorization.

89090818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44545411.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 89090818 is about 9438.7932491394. The cubic root of 89090818 is about 446.6263228085.

The spelling of 89090818 in words is "eighty-nine million, ninety thousand, eight hundred eighteen".