7229813 has 2 divisors, whose sum is σ = 7229814. Its totient is φ = 7229812.

The previous prime is 7229809. The next prime is 7229857. The reversal of 7229813 is 3189227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3928324 + 3301489 = 1982^2 + 1817^2 .

It is an emirp because it is prime and its reverse (3189227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7229813 - 2² = 7229809 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7229813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7229513) 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, 3614906 + 3614907.

It is an arithmetic number, because the mean of its divisors is an integer number (3614907).

Almost surely, 2^7229813 is an apocalyptic number.

It is an amenable number.

7229813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7229813 is an equidigital number, since it uses as much as digits as its factorization.

7229813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 7229813 is about 2688.8311587007. The cubic root of 7229813 is about 193.3640296748.

The spelling of 7229813 in words is "seven million, two hundred twenty-nine thousand, eight hundred thirteen".