989896858 has 8 divisors (see below), whose sum is σ = 1488663540. Its totient is φ = 493675680.

The previous prime is 989896849. The next prime is 989896861. The reversal of 989896858 is 858698989.

It can be written as a sum of positive squares in 2 ways, for example, as 984892689 + 5004169 = 31383^2 + 2237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635403 + ... + 636958.

Almost surely, 2^989896858 is an apocalyptic number.

989896858 is a deficient number, since it is larger than the sum of its proper divisors (498766682).

989896858 is a wasteful number, since it uses less digits than its factorization.

989896858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272752.

The product of its digits is 89579520, while the sum is 70.

The square root of 989896858 is about 31462.6263684391. The cubic root of 989896858 is about 996.6208804122.

The spelling of 989896858 in words is "nine hundred eighty-nine million, eight hundred ninety-six thousand, eight hundred fifty-eight".