989044520 has 32 divisors (see below), whose sum is σ = 2247392520. Its totient is φ = 391699200.

The previous prime is 989044477. The next prime is 989044523. The reversal of 989044520 is 25440989.

It can be written as a sum of positive squares in 4 ways, for example, as 970571716 + 18472804 = 31154^2 + 4298^2 .

It is not an unprimeable number, because it can be changed into a prime (989044523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118367 + ... + 126446.

Almost surely, 2^989044520 is an apocalyptic number.

It is an amenable number.

989044520 is an abundant number, since it is smaller than the sum of its proper divisors (1258348000).

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

989044520 is a wasteful number, since it uses less digits than its factorization.

989044520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244925 (or 244921 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 989044520 is about 31449.0782058871. The cubic root of 989044520 is about 996.3347557308.

The spelling of 989044520 in words is "nine hundred eighty-nine million, forty-four thousand, five hundred twenty".