989440474 has 24 divisors (see below), whose sum is σ = 1633129344. Its totient is φ = 449255400.

The previous prime is 989440429. The next prime is 989440483. The reversal of 989440474 is 474044989.

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 11 ways as a sum of consecutive naturals, for example, 310839 + ... + 314005.

It is an arithmetic number, because the mean of its divisors is an integer number (68047056).

Almost surely, 2^989440474 is an apocalyptic number.

989440474 is a deficient number, since it is larger than the sum of its proper divisors (643688870).

989440474 is a wasteful number, since it uses less digits than its factorization.

989440474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482 (or 4471 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 989440474 is about 31455.3727366248. The cubic root of 989440474 is about 996.4676955161.

The spelling of 989440474 in words is "nine hundred eighty-nine million, four hundred forty thousand, four hundred seventy-four".