8968981 has 4 divisors (see below), whose sum is σ = 10250272. Its totient is φ = 7687692.

The previous prime is 8968957. The next prime is 8968987. The reversal of 8968981 is 1898698.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8968981 - 2¹³ = 8960789 is a prime.

It is a super-2 number, since 2×8968981² = 160885240356722, 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 (8968987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640635 + ... + 640648.

It is an arithmetic number, because the mean of its divisors is an integer number (2562568).

Almost surely, 2^8968981 is an apocalyptic number.

It is an amenable number.

8968981 is a deficient number, since it is larger than the sum of its proper divisors (1281291).

8968981 is a wasteful number, since it uses less digits than its factorization.

8968981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281290.

The product of its digits is 248832, while the sum is 49.

The square root of 8968981 is about 2994.8257044443. The cubic root of 8968981 is about 207.7691364210.

The spelling of 8968981 in words is "eight million, nine hundred sixty-eight thousand, nine hundred eighty-one".