989974791204 has 96 divisors (see below), whose sum is σ = 2726985547776. Its totient is φ = 273535539840.

The previous prime is 989974791187. The next prime is 989974791259. The reversal of 989974791204 is 402197479989.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3636622 + ... + 3899354.

It is an arithmetic number, because the mean of its divisors is an integer number (28406099456).

Almost surely, 2^989974791204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989974791204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363492773888).

989974791204 is an abundant number, since it is smaller than the sum of its proper divisors (1737010756572).

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

989974791204 is a wasteful number, since it uses less digits than its factorization.

989974791204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264225 (or 264223 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 69.

The spelling of 989974791204 in words is "nine hundred eighty-nine billion, nine hundred seventy-four million, seven hundred ninety-one thousand, two hundred four".