8085981 has 8 divisors (see below), whose sum is σ = 10813600. Its totient is φ = 5374512.

The previous prime is 8085953. The next prime is 8086003. The reversal of 8085981 is 1895808.

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

It is not a de Polignac number, because 8085981 - 2¹³ = 8077789 is a prime.

It is a super-2 number, since 2×8085981² = 130766177464722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085911) 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, 2815 + ... + 4908.

It is an arithmetic number, because the mean of its divisors is an integer number (1351700).

Almost surely, 2^8085981 is an apocalyptic number.

It is an amenable number.

8085981 is a deficient number, since it is larger than the sum of its proper divisors (2727619).

8085981 is a wasteful number, since it uses less digits than its factorization.

8085981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8075.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 8085981 is about 2843.5859403225. The cubic root of 8085981 is about 200.7139566303.

The spelling of 8085981 in words is "eight million, eighty-five thousand, nine hundred eighty-one".