8975981 has 8 divisors (see below), whose sum is σ = 10283520. Its totient is φ = 7674768.

The previous prime is 8975963. The next prime is 8975987. The reversal of 8975981 is 1895798.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8975981 is a prime.

It is a super-2 number, since 2×8975981² = 161136469824722, 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 (8975987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015 + ... + 4691.

It is an arithmetic number, because the mean of its divisors is an integer number (1285440).

Almost surely, 2^8975981 is an apocalyptic number.

It is an amenable number.

8975981 is a deficient number, since it is larger than the sum of its proper divisors (1307539).

8975981 is a wasteful number, since it uses less digits than its factorization.

8975981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163.

The product of its digits is 181440, while the sum is 47.

The square root of 8975981 is about 2995.9941588728. The cubic root of 8975981 is about 207.8231747320.

The spelling of 8975981 in words is "eight million, nine hundred seventy-five thousand, nine hundred eighty-one".