989309045 has 32 divisors (see below), whose sum is σ = 1278443520. Its totient is φ = 733259520.

The previous prime is 989309029. The next prime is 989309047. The reversal of 989309045 is 540903989.

It is not a de Polignac number, because 989309045 - 2⁴ = 989309029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989309047) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 569999 + ... + 571731.

It is an arithmetic number, because the mean of its divisors is an integer number (39951360).

Almost surely, 2^989309045 is an apocalyptic number.

It is an amenable number.

989309045 is a deficient number, since it is larger than the sum of its proper divisors (289134475).

989309045 is a wasteful number, since it uses less digits than its factorization.

989309045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 989309045 is about 31453.2835328841. The cubic root of 989309045 is about 996.4235727500.

The spelling of 989309045 in words is "nine hundred eighty-nine million, three hundred nine thousand, forty-five".