9240520447 has 2 divisors, whose sum is σ = 9240520448. Its totient is φ = 9240520446.

The previous prime is 9240520433. The next prime is 9240520481. The reversal of 9240520447 is 7440250429.

It is a weak prime.

It is an emirp because it is prime and its reverse (7440250429) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9240520447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9240520547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4620260223 + 4620260224.

It is an arithmetic number, because the mean of its divisors is an integer number (4620260224).

Almost surely, 2^9240520447 is an apocalyptic number.

9240520447 is a deficient number, since it is larger than the sum of its proper divisors (1).

9240520447 is an equidigital number, since it uses as much as digits as its factorization.

9240520447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 9240520447 is about 96127.6258262941. The cubic root of 9240520447 is about 2098.4508943635.

The spelling of 9240520447 in words is "nine billion, two hundred forty million, five hundred twenty thousand, four hundred forty-seven".