4247415649 has 2 divisors, whose sum is σ = 4247415650. Its totient is φ = 4247415648.

The previous prime is 4247415647. The next prime is 4247415673. The reversal of 4247415649 is 9465147424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4142209600 + 105206049 = 64360^2 + 10257^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247415649 - 2¹ = 4247415647 is a prime.

Together with 4247415647, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4247415599 and 4247415608.

It is not a weakly prime, because it can be changed into another prime (4247415647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2123707824 + 2123707825.

It is an arithmetic number, because the mean of its divisors is an integer number (2123707825).

Almost surely, 2^4247415649 is an apocalyptic number.

It is an amenable number.

4247415649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4247415649 is an equidigital number, since it uses as much as digits as its factorization.

4247415649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The square root of 4247415649 is about 65172.1999705396. The cubic root of 4247415649 is about 1619.4775088118.

The spelling of 4247415649 in words is "four billion, two hundred forty-seven million, four hundred fifteen thousand, six hundred forty-nine".