9227981 has 4 divisors (see below), whose sum is σ = 10546272. Its totient is φ = 7909692.

The previous prime is 9227969. The next prime is 9227983. The reversal of 9227981 is 1897229.

9227981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 9227981 - 2⁶ = 9227917 is a prime.

It is a super-2 number, since 2×9227981² = 170311266672722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9227983) 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 3 ways as a sum of consecutive naturals, for example, 659135 + ... + 659148.

It is an arithmetic number, because the mean of its divisors is an integer number (2636568).

Almost surely, 2^9227981 is an apocalyptic number.

It is an amenable number.

9227981 is a deficient number, since it is larger than the sum of its proper divisors (1318291).

9227981 is a wasteful number, since it uses less digits than its factorization.

9227981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318290.

The product of its digits is 18144, while the sum is 38.

The square root of 9227981 is about 3037.7592070472. The cubic root of 9227981 is about 209.7501260794.

The spelling of 9227981 in words is "nine million, two hundred twenty-seven thousand, nine hundred eighty-one".