7209812969 has 2 divisors, whose sum is σ = 7209812970. Its totient is φ = 7209812968.

The previous prime is 7209812963. The next prime is 7209813049. The reversal of 7209812969 is 9692189027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4598602969 + 2611210000 = 67813^2 + 51100^2 .

It is an emirp because it is prime and its reverse (9692189027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7209812969 - 2²⁰ = 7208764393 is a prime.

It is a super-2 number, since 2×7209812969² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7209812969.

It is not a weakly prime, because it can be changed into another prime (7209812963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3604906484 + 3604906485.

It is an arithmetic number, because the mean of its divisors is an integer number (3604906485).

Almost surely, 2^7209812969 is an apocalyptic number.

It is an amenable number.

7209812969 is a deficient number, since it is larger than the sum of its proper divisors (1).

7209812969 is an equidigital number, since it uses as much as digits as its factorization.

7209812969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 7209812969 is about 84910.6175280807. The cubic root of 7209812969 is about 1931.8556225849.

The spelling of 7209812969 in words is "seven billion, two hundred nine million, eight hundred twelve thousand, nine hundred sixty-nine".