7949449513 has 2 divisors, whose sum is σ = 7949449514. Its totient is φ = 7949449512.

The previous prime is 7949449493. The next prime is 7949449531. The reversal of 7949449513 is 3159449497.

Together with next prime (7949449531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7948970649 + 478864 = 89157^2 + 692^2 .

It is an emirp because it is prime and its reverse (3159449497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7949449513 - 2²⁹ = 7412578601 is a prime.

It is not a weakly prime, because it can be changed into another prime (7949449553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974724756 + 3974724757.

It is an arithmetic number, because the mean of its divisors is an integer number (3974724757).

Almost surely, 2^7949449513 is an apocalyptic number.

It is an amenable number.

7949449513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949449513 is an equidigital number, since it uses as much as digits as its factorization.

7949449513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 7949449513 is about 89159.6854693869. The cubic root of 7949449513 is about 1995.7785553884.

The spelling of 7949449513 in words is "seven billion, nine hundred forty-nine million, four hundred forty-nine thousand, five hundred thirteen".