989896859 has 16 divisors (see below), whose sum is σ = 1209733056. Its totient is φ = 790656000.

The previous prime is 989896849. The next prime is 989896861. The reversal of 989896859 is 958698989.

It is a cyclic number.

It is not a de Polignac number, because 989896859 - 2²⁰ = 988848283 is a prime.

It is a super-3 number, since 3×989896859³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989896792 and 989896801.

It is not an unprimeable number, because it can be changed into a prime (989896819) 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, 29162 + ... + 53199.

It is an arithmetic number, because the mean of its divisors is an integer number (75608316).

Almost surely, 2^989896859 is an apocalyptic number.

989896859 is a deficient number, since it is larger than the sum of its proper divisors (219836197).

989896859 is a wasteful number, since it uses less digits than its factorization.

989896859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82486.

The product of its digits is 100776960, while the sum is 71.

The square root of 989896859 is about 31462.6263843310. The cubic root of 989896859 is about 996.6208807478.

The spelling of 989896859 in words is "nine hundred eighty-nine million, eight hundred ninety-six thousand, eight hundred fifty-nine".