7895566449 has 27 divisors (see below), whose sum is σ = 11853553387. Its totient is φ = 5258912688.

The previous prime is 7895566429. The next prime is 7895566453. The reversal of 7895566449 is 9446655987.

The square root of 7895566449 is 88857.

It is a perfect power (a square), and thus also a powerful number.

7895566449 is a `hidden beast` number, since 7 + 89 + 55 + 66 + 449 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2245338225 + 5650228224 = 47385^2 + 75168^2 .

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 7895566449 - 2⁵ = 7895566417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7895566409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7196869 + ... + 7197965.

Almost surely, 2^7895566449 is an apocalyptic number.

7895566449 is the 88857-th square number.

7895566449 is the 44429-th centered octagonal number.

It is an amenable number.

7895566449 is a deficient number, since it is larger than the sum of its proper divisors (3957986938).

7895566449 is an frugal number, since it uses more digits than its factorization.

7895566449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 1100 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The cubic root of 7895566449 is about 1991.2590577008.

The spelling of 7895566449 in words is "seven billion, eight hundred ninety-five million, five hundred sixty-six thousand, four hundred forty-nine".