8981985 has 8 divisors (see below), whose sum is σ = 14371200. Its totient is φ = 4790384.

The previous prime is 8981981. The next prime is 8981989. The reversal of 8981985 is 5891898.

It is an interprime number because it is at equal distance from previous prime (8981981) and next prime (8981989).

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 8981985 - 2² = 8981981 is a prime.

It is a super-3 number, since 3×8981985³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8981981) 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, 299385 + ... + 299414.

It is an arithmetic number, because the mean of its divisors is an integer number (1796400).

Almost surely, 2^8981985 is an apocalyptic number.

It is an amenable number.

8981985 is a deficient number, since it is larger than the sum of its proper divisors (5389215).

8981985 is a wasteful number, since it uses less digits than its factorization.

8981985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598807.

The product of its digits is 207360, while the sum is 48.

The square root of 8981985 is about 2996.9959959933. The cubic root of 8981985 is about 207.8695017847.

The spelling of 8981985 in words is "eight million, nine hundred eighty-one thousand, nine hundred eighty-five".