7730947409 has 4 divisors (see below), whose sum is σ = 7735190016. Its totient is φ = 7726704804.

The previous prime is 7730947403. The next prime is 7730947417. The reversal of 7730947409 is 9047490377.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7730947409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7730947403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118569 + ... + 2122214.

It is an arithmetic number, because the mean of its divisors is an integer number (1933797504).

Almost surely, 2^7730947409 is an apocalyptic number.

It is an amenable number.

7730947409 is a deficient number, since it is larger than the sum of its proper divisors (4242607).

7730947409 is a wasteful number, since it uses less digits than its factorization.

7730947409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242606.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The square root of 7730947409 is about 87925.8062743811. The cubic root of 7730947409 is about 1977.3227947545.

The spelling of 7730947409 in words is "seven billion, seven hundred thirty million, nine hundred forty-seven thousand, four hundred nine".