89642866 has 4 divisors (see below), whose sum is σ = 134464302. Its totient is φ = 44821432.

The previous prime is 89642827. The next prime is 89642869. The reversal of 89642866 is 66824698.

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., 73874025 + 15768841 = 8595^2 + 3971^2 .

It is not an unprimeable number, because it can be changed into a prime (89642869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22410715 + ... + 22410718.

Almost surely, 2^89642866 is an apocalyptic number.

89642866 is a deficient number, since it is larger than the sum of its proper divisors (44821436).

89642866 is a wasteful number, since it uses less digits than its factorization.

89642866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44821435.

The product of its digits is 995328, while the sum is 49.

The square root of 89642866 is about 9467.9916561011. The cubic root of 89642866 is about 447.5469251584.

The spelling of 89642866 in words is "eighty-nine million, six hundred forty-two thousand, eight hundred sixty-six".