989513490 has 128 divisors (see below), whose sum is σ = 2832334848. Its totient is φ = 216483840.

The previous prime is 989513489. The next prime is 989513537. The reversal of 989513490 is 94315989.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 630687 + ... + 632253.

It is an arithmetic number, because the mean of its divisors is an integer number (22127616).

Almost surely, 2^989513490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989513490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416167424).

989513490 is an abundant number, since it is smaller than the sum of its proper divisors (1842821358).

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

989513490 is a wasteful number, since it uses less digits than its factorization.

989513490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 989513490 is about 31456.5333436474. The cubic root of 989513490 is about 996.4922064383.

The spelling of 989513490 in words is "nine hundred eighty-nine million, five hundred thirteen thousand, four hundred ninety".