9222991 has 4 divisors (see below), whose sum is σ = 9447984. Its totient is φ = 8998000.

The previous prime is 9222989. The next prime is 9223001. The reversal of 9222991 is 1992229.

9222991 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 an emirpimes, since its reverse is a distinct semiprime: 1992229 = 1217 ⋅1637.

It is a cyclic number.

It is not a de Polignac number, because 9222991 - 2¹ = 9222989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9222911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112435 + ... + 112516.

It is an arithmetic number, because the mean of its divisors is an integer number (2361996).

Almost surely, 2^9222991 is an apocalyptic number.

9222991 is a deficient number, since it is larger than the sum of its proper divisors (224993).

9222991 is a wasteful number, since it uses less digits than its factorization.

9222991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224992.

The product of its digits is 5832, while the sum is 34.

The square root of 9222991 is about 3036.9377668961. The cubic root of 9222991 is about 209.7123120352.

The spelling of 9222991 in words is "nine million, two hundred twenty-two thousand, nine hundred ninety-one".