989028605 has 8 divisors (see below), whose sum is σ = 1191801600. Its totient is φ = 787911376.

The previous prime is 989028583. The next prime is 989028617. The reversal of 989028605 is 506820989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989028605 - 2⁶ = 989028541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989028605.

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 in 7 ways as a sum of consecutive naturals, for example, 412625 + ... + 415014.

It is an arithmetic number, because the mean of its divisors is an integer number (148975200).

Almost surely, 2^989028605 is an apocalyptic number.

It is an amenable number.

989028605 is a deficient number, since it is larger than the sum of its proper divisors (202772995).

989028605 is a wasteful number, since it uses less digits than its factorization.

989028605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827883.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 989028605 is about 31448.8251767852. The cubic root of 989028605 is about 996.3294115990.

The spelling of 989028605 in words is "nine hundred eighty-nine million, twenty-eight thousand, six hundred five".