7447113649 has 2 divisors, whose sum is σ = 7447113650. Its totient is φ = 7447113648.

The previous prime is 7447113643. The next prime is 7447113659. The reversal of 7447113649 is 9463117447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7362841249 + 84272400 = 85807^2 + 9180^2 .

It is a cyclic number.

It is not a de Polignac number, because 7447113649 - 2⁷ = 7447113521 is a prime.

It is a super-2 number, since 2×7447113649² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7447113599 and 7447113608.

It is not a weakly prime, because it can be changed into another prime (7447113643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3723556824 + 3723556825.

It is an arithmetic number, because the mean of its divisors is an integer number (3723556825).

Almost surely, 2^7447113649 is an apocalyptic number.

It is an amenable number.

7447113649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7447113649 is an equidigital number, since it uses as much as digits as its factorization.

7447113649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 7447113649 is about 86296.6607059624. The cubic root of 7447113649 is about 1952.8220064660.

The spelling of 7447113649 in words is "seven billion, four hundred forty-seven million, one hundred thirteen thousand, six hundred forty-nine".