8933981 has 16 divisors (see below), whose sum is σ = 10627584. Its totient is φ = 7351344.

The previous prime is 8933963. The next prime is 8933989. The reversal of 8933981 is 1893398.

8933981 = T₆₂₃ + T₆₂₄ + ... + T₆₆₅.

8933981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8933981 - 2⁶ = 8933917 is a prime.

It is a super-2 number, since 2×8933981² = 159632033016722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8933989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19946 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (664224).

Almost surely, 2^8933981 is an apocalyptic number.

It is an amenable number.

8933981 is a deficient number, since it is larger than the sum of its proper divisors (1693603).

8933981 is a wasteful number, since it uses less digits than its factorization.

8933981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its digits is 46656, while the sum is 41.

The square root of 8933981 is about 2988.9765807045. The cubic root of 8933981 is about 207.4985222714.

The spelling of 8933981 in words is "eight million, nine hundred thirty-three thousand, nine hundred eighty-one".