989449428 has 48 divisors (see below), whose sum is σ = 2539454400. Its totient is φ = 299828320.

The previous prime is 989449423. The next prime is 989449441. The reversal of 989449428 is 824944989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989449423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15003 + ... + 46946.

It is an arithmetic number, because the mean of its divisors is an integer number (52905300).

Almost surely, 2^989449428 is an apocalyptic number.

It is an amenable number.

989449428 is an abundant number, since it is smaller than the sum of its proper divisors (1550004972).

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

989449428 is a wasteful number, since it uses less digits than its factorization.

989449428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61989 (or 61965 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 57.

The square root of 989449428 is about 31455.5150649294. The cubic root of 989449428 is about 996.4707013714.

The spelling of 989449428 in words is "nine hundred eighty-nine million, four hundred forty-nine thousand, four hundred twenty-eight".