989479936 has 33 divisors (see below), whose sum is σ = 1980007831. Its totient is φ = 494236672.

The previous prime is 989479921. The next prime is 989479943. The reversal of 989479936 is 639974989.

The square root of 989479936 is 31456.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1006101 + ... + 1007083.

Almost surely, 2^989479936 is an apocalyptic number.

989479936 is the 31456-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989479936

989479936 is an abundant number, since it is smaller than the sum of its proper divisors (990527895).

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

989479936 is an frugal number, since it uses more digits than its factorization.

989479936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 985 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 64.

The cubic root of 989479936 is about 996.4809427626.

Multiplying 989479936 by its sum of digits (64), we get a square (63326715904 = 251648²).

989479936 divided by its sum of digits (64) gives a square (15460624 = 3932²).

The spelling of 989479936 in words is "nine hundred eighty-nine million, four hundred seventy-nine thousand, nine hundred thirty-six".