9320981 has 16 divisors (see below), whose sum is σ = 10378368. Its totient is φ = 8332800.

The previous prime is 9320939. The next prime is 9320989. The reversal of 9320981 is 1890239.

It is a cyclic number.

It is not a de Polignac number, because 9320981 - 2¹⁸ = 9058837 is a prime.

It is a super-2 number, since 2×9320981² = 173761373604722, 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 (9320989) 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 15 ways as a sum of consecutive naturals, for example, 29816 + ... + 30126.

It is an arithmetic number, because the mean of its divisors is an integer number (648648).

Almost surely, 2^9320981 is an apocalyptic number.

9320981 is the 1763-rd octagonal number.

It is an amenable number.

9320981 is a deficient number, since it is larger than the sum of its proper divisors (1057387).

9320981 is a wasteful number, since it uses less digits than its factorization.

9320981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9320981 is about 3053.0281688841. The cubic root of 9320981 is about 210.4523958454.

It can be divided in two parts, 9320 and 981, that added together give a palindrome (10301).

The spelling of 9320981 in words is "nine million, three hundred twenty thousand, nine hundred eighty-one".