8319121 has 2 divisors, whose sum is σ = 8319122. Its totient is φ = 8319120.

The previous prime is 8319109. The next prime is 8319127. The reversal of 8319121 is 1219138.

8319121 = 2039² + 2040².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 4157521 = 2040^2 + 2039^2 .

It is a cyclic number.

It is not a de Polignac number, because 8319121 - 2⁵ = 8319089 is a prime.

It is not a weakly prime, because it can be changed into another prime (8319127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4159560 + 4159561.

It is an arithmetic number, because the mean of its divisors is an integer number (4159561).

Almost surely, 2^8319121 is an apocalyptic number.

8319121 is the 2040-th centered square number.

It is an amenable number.

8319121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8319121 is an equidigital number, since it uses as much as digits as its factorization.

8319121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 8319121 is about 2884.2886471364. The cubic root of 8319121 is about 202.6247445583.

The spelling of 8319121 in words is "eight million, three hundred nineteen thousand, one hundred twenty-one".