989571448 has 8 divisors (see below), whose sum is σ = 1855446480. Its totient is φ = 494785720.

The previous prime is 989571421. The next prime is 989571467. The reversal of 989571448 is 844175989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 61848208 + ... + 61848223.

It is an arithmetic number, because the mean of its divisors is an integer number (231930810).

Almost surely, 2^989571448 is an apocalyptic number.

It is an amenable number.

989571448 is a deficient number, since it is larger than the sum of its proper divisors (865875032).

989571448 is a wasteful number, since it uses less digits than its factorization.

989571448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123696437 (or 123696433 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 989571448 is about 31457.4545696247. The cubic root of 989571448 is about 996.5116616448.

The spelling of 989571448 in words is "nine hundred eighty-nine million, five hundred seventy-one thousand, four hundred forty-eight".