8221933 has 4 divisors (see below), whose sum is σ = 8274460. Its totient is φ = 8169408.

The previous prime is 8221921. The next prime is 8221937. The reversal of 8221933 is 3391228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4169764 + 4052169 = 2042^2 + 2013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221933 is a prime.

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 (8221937) 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, 26028 + ... + 26341.

It is an arithmetic number, because the mean of its divisors is an integer number (2068615).

Almost surely, 2^8221933 is an apocalyptic number.

It is an amenable number.

8221933 is a deficient number, since it is larger than the sum of its proper divisors (52527).

8221933 is a wasteful number, since it uses less digits than its factorization.

8221933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52526.

The product of its digits is 2592, while the sum is 28.

The square root of 8221933 is about 2867.3913231368. The cubic root of 8221933 is about 201.8325982955.

The spelling of 8221933 in words is "eight million, two hundred twenty-one thousand, nine hundred thirty-three".