8321953 has 4 divisors (see below), whose sum is σ = 8343108. Its totient is φ = 8300800.

The previous prime is 8321941. The next prime is 8321977. The reversal of 8321953 is 3591238.

It is a happy number.

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 6110784 + 2211169 = 2472^2 + 1487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8321953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8321903) 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, 9976 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (2085777).

Almost surely, 2^8321953 is an apocalyptic number.

It is an amenable number.

8321953 is a deficient number, since it is larger than the sum of its proper divisors (21155).

8321953 is a wasteful number, since it uses less digits than its factorization.

8321953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21154.

The product of its digits is 6480, while the sum is 31.

The square root of 8321953 is about 2884.7795409702. The cubic root of 8321953 is about 202.6477344941.

The spelling of 8321953 in words is "eight million, three hundred twenty-one thousand, nine hundred fifty-three".