985989121 has 8 divisors (see below), whose sum is σ = 1074628800. Its totient is φ = 899177232.

The previous prime is 985989083. The next prime is 985989127. The reversal of 985989121 is 121989589.

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 985989121 - 2⁹ = 985988609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985989127) 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, 455821 + ... + 457978.

It is an arithmetic number, because the mean of its divisors is an integer number (134328600).

It is a Proth number, since it is equal to 15045 ⋅ 2¹⁶ + 1 and 15045 < 2¹⁶.

Almost surely, 2^985989121 is an apocalyptic number.

It is an amenable number.

985989121 is a deficient number, since it is larger than the sum of its proper divisors (88639679).

985989121 is a wasteful number, since it uses less digits than its factorization.

985989121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913895.

The product of its digits is 466560, while the sum is 52.

The square root of 985989121 is about 31400.4637067671. The cubic root of 985989121 is about 995.3077239831.

The spelling of 985989121 in words is "nine hundred eighty-five million, nine hundred eighty-nine thousand, one hundred twenty-one".