989676836 has 12 divisors (see below), whose sum is σ = 1747824540. Its totient is φ = 490298400.

The previous prime is 989676833. The next prime is 989676847. The reversal of 989676836 is 638676989.

It can be written as a sum of positive squares in 2 ways, for example, as 854977600 + 134699236 = 29240^2 + 11606^2 .

It is a super-3 number, since 3×989676836³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (989676833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1134515 + ... + 1135386.

It is an arithmetic number, because the mean of its divisors is an integer number (145652045).

Almost surely, 2^989676836 is an apocalyptic number.

It is an amenable number.

989676836 is a deficient number, since it is larger than the sum of its proper divisors (758147704).

989676836 is a wasteful number, since it uses less digits than its factorization.

989676836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270014 (or 2270012 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The square root of 989676836 is about 31459.1296128803. The cubic root of 989676836 is about 996.5470360968.

The spelling of 989676836 in words is "nine hundred eighty-nine million, six hundred seventy-six thousand, eight hundred thirty-six".