7321189 has 2 divisors, whose sum is σ = 7321190. Its totient is φ = 7321188.

The previous prime is 7321183. The next prime is 7321201. The reversal of 7321189 is 9811237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708100 + 613089 = 2590^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 7321189 - 2¹³ = 7312997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7321189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7321183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3660594 + 3660595.

It is an arithmetic number, because the mean of its divisors is an integer number (3660595).

Almost surely, 2^7321189 is an apocalyptic number.

It is an amenable number.

7321189 is a deficient number, since it is larger than the sum of its proper divisors (1).

7321189 is an equidigital number, since it uses as much as digits as its factorization.

7321189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 7321189 is about 2705.7695762943. The cubic root of 7321189 is about 194.1752499373.

The spelling of 7321189 in words is "seven million, three hundred twenty-one thousand, one hundred eighty-nine".