989705472 has 144 divisors (see below), whose sum is σ = 3027343872. Its totient is φ = 281180160.

The previous prime is 989705467. The next prime is 989705527. The reversal of 989705472 is 274507989.

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, 1219947 + ... + 1220757.

Almost surely, 2^989705472 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 989705472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513671936).

989705472 is an abundant number, since it is smaller than the sum of its proper divisors (2037638400).

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

989705472 is a wasteful number, since it uses less digits than its factorization.

989705472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 989705472 is about 31459.5847397896. The cubic root of 989705472 is about 996.5566475998.

The spelling of 989705472 in words is "nine hundred eighty-nine million, seven hundred five thousand, four hundred seventy-two".