989445460 has 12 divisors (see below), whose sum is σ = 2077835508. Its totient is φ = 395778176.

The previous prime is 989445449. The next prime is 989445473. The reversal of 989445460 is 64544989.

It can be written as a sum of positive squares in 2 ways, for example, as 370331536 + 619113924 = 19244^2 + 24882^2 .

It is a super-2 number, since 2×989445460² = 1958004636629223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24736117 + ... + 24736156.

It is an arithmetic number, because the mean of its divisors is an integer number (173152959).

Almost surely, 2^989445460 is an apocalyptic number.

It is an amenable number.

989445460 is an abundant number, since it is smaller than the sum of its proper divisors (1088390048).

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

989445460 is a wasteful number, since it uses less digits than its factorization.

989445460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49472282 (or 49472280 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 989445460 is about 31455.4519916659. The cubic root of 989445460 is about 996.4693693172.

The spelling of 989445460 in words is "nine hundred eighty-nine million, four hundred forty-five thousand, four hundred sixty".