989813670 has 32 divisors (see below), whose sum is σ = 2376380160. Its totient is φ = 263858400.

The previous prime is 989813651. The next prime is 989813681. The reversal of 989813670 is 76318989.

It is a super-2 number, since 2×989813670² = 1959462202637737800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166245 + ... + 172095.

It is an arithmetic number, because the mean of its divisors is an integer number (74261880).

Almost surely, 2^989813670 is an apocalyptic number.

989813670 is an abundant number, since it is smaller than the sum of its proper divisors (1386566490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989813670 is a wasteful number, since it uses less digits than its factorization.

989813670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 989813670 is about 31461.3043276975. The cubic root of 989813670 is about 996.5929619412.

The spelling of 989813670 in words is "nine hundred eighty-nine million, eight hundred thirteen thousand, six hundred seventy".