9221807 has 4 divisors (see below), whose sum is σ = 10539216. Its totient is φ = 7904400.

The previous prime is 9221801. The next prime is 9221809. The reversal of 9221807 is 7081229.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7081229 = 347 ⋅20407.

It is not a de Polignac number, because 9221807 - 2¹² = 9217711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9221807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221801) 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, 658694 + ... + 658707.

It is an arithmetic number, because the mean of its divisors is an integer number (2634804).

Almost surely, 2^9221807 is an apocalyptic number.

9221807 is a deficient number, since it is larger than the sum of its proper divisors (1317409).

9221807 is a wasteful number, since it uses less digits than its factorization.

9221807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317408.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 9221807 is about 3036.7428274386. The cubic root of 9221807 is about 209.7033377230.

The spelling of 9221807 in words is "nine million, two hundred twenty-one thousand, eight hundred seven".