984544989 has 4 divisors (see below), whose sum is σ = 1312726656. Its totient is φ = 656363324.

The previous prime is 984544973. The next prime is 984544991. The reversal of 984544989 is 989445489.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 984544989 - 2⁴ = 984544973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984544999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164090829 + ... + 164090834.

It is an arithmetic number, because the mean of its divisors is an integer number (328181664).

Almost surely, 2^984544989 is an apocalyptic number.

It is an amenable number.

984544989 is a deficient number, since it is larger than the sum of its proper divisors (328181667).

984544989 is a wasteful number, since it uses less digits than its factorization.

984544989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328181666.

The product of its digits is 14929920, while the sum is 60.

The square root of 984544989 is about 31377.4598876327. The cubic root of 984544989 is about 994.8215597116.

The spelling of 984544989 in words is "nine hundred eighty-four million, five hundred forty-four thousand, nine hundred eighty-nine".