7247904809 has 2 divisors, whose sum is σ = 7247904810. Its totient is φ = 7247904808.

The previous prime is 7247904767. The next prime is 7247904869. The reversal of 7247904809 is 9084097427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7244563225 + 3341584 = 85115^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 7247904809 - 2¹² = 7247900713 is a prime.

It is not a weakly prime, because it can be changed into another prime (7247904869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623952404 + 3623952405.

It is an arithmetic number, because the mean of its divisors is an integer number (3623952405).

Almost surely, 2^7247904809 is an apocalyptic number.

It is an amenable number.

7247904809 is a deficient number, since it is larger than the sum of its proper divisors (1).

7247904809 is an equidigital number, since it uses as much as digits as its factorization.

7247904809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 7247904809 is about 85134.6275554195. The cubic root of 7247904809 is about 1935.2518603762.

The spelling of 7247904809 in words is "seven billion, two hundred forty-seven million, nine hundred four thousand, eight hundred nine".