989985361 has 8 divisors (see below), whose sum is σ = 1050472800. Its totient is φ = 929748288.

The previous prime is 989985349. The next prime is 989985377. The reversal of 989985361 is 163589989.

989985361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 989985361 - 2¹⁹ = 989461073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989985296 and 989985305.

It is not an unprimeable number, because it can be changed into a prime (989988361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54411 + ... + 70288.

It is an arithmetic number, because the mean of its divisors is an integer number (131309100).

Almost surely, 2^989985361 is an apocalyptic number.

It is an amenable number.

989985361 is a deficient number, since it is larger than the sum of its proper divisors (60487439).

989985361 is a wasteful number, since it uses less digits than its factorization.

989985361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125183.

The product of its digits is 4199040, while the sum is 58.

The square root of 989985361 is about 31464.0328152638. The cubic root of 989985361 is about 996.6505809171.

The spelling of 989985361 in words is "nine hundred eighty-nine million, nine hundred eighty-five thousand, three hundred sixty-one".