7966449253 has 6 divisors (see below), whose sum is σ = 9267094086. Its totient is φ = 6828385032.

The previous prime is 7966449247. The next prime is 7966449259. The reversal of 7966449253 is 3529446697.

It is an interprime number because it is at equal distance from previous prime (7966449247) and next prime (7966449259).

It can be written as a sum of positive squares in only one way, i.e., 6197153284 + 1769295969 = 78722^2 + 42063^2 .

It is not a de Polignac number, because 7966449253 - 2⁵ = 7966449221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7966449194 and 7966449203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966449259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81290250 + ... + 81290347.

It is an arithmetic number, because the mean of its divisors is an integer number (1544515681).

Almost surely, 2^7966449253 is an apocalyptic number.

It is an amenable number.

7966449253 is a deficient number, since it is larger than the sum of its proper divisors (1300644833).

7966449253 is a wasteful number, since it uses less digits than its factorization.

7966449253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162580611 (or 162580604 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 55.

The square root of 7966449253 is about 89254.9676656711. The cubic root of 7966449253 is about 1997.2001867686.

The spelling of 7966449253 in words is "seven billion, nine hundred sixty-six million, four hundred forty-nine thousand, two hundred fifty-three".