9722281 has 8 divisors (see below), whose sum is σ = 10281600. Its totient is φ = 9167760.

The previous prime is 9722269. The next prime is 9722287. The reversal of 9722281 is 1822279.

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-9722281 is a prime.

It is a super-2 number, since 2×9722281² = 189045495685922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 9⁴ + 7 + 2¹⁴ + 2²⁰ + 2²³ + 8⁶ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9722287) 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 7 ways as a sum of consecutive naturals, for example, 3471 + ... + 5611.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^9722281 is an apocalyptic number.

It is an amenable number.

9722281 is a deficient number, since it is larger than the sum of its proper divisors (559319).

9722281 is a wasteful number, since it uses less digits than its factorization.

9722281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its digits is 4032, while the sum is 31.

The square root of 9722281 is about 3118.0572477105. The cubic root of 9722281 is about 213.4302909424.

The spelling of 9722281 in words is "nine million, seven hundred twenty-two thousand, two hundred eighty-one".