7344549866889 has 81 divisors (see below), whose sum is σ = 10960516683207. Its totient is φ = 4739219705088.

The previous prime is 7344549866881. The next prime is 7344549866959. The reversal of 7344549866889 is 9886689454437.

The square root of 7344549866889 is 2710083.

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

7344549866889 is a `hidden beast` number, since 7 + 3 + 4 + 4 + 549 + 8 + 6 + 68 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3297983121225 + 4046566745664 = 1816035^2 + 2011608^2 .

It is not a de Polignac number, because 7344549866889 - 2³ = 7344549866881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7344549866881) 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 in 80 ways as a sum of consecutive naturals, for example, 52838488182 + ... + 52838488320.

Almost surely, 2^{7344549866889} is an apocalyptic number.

7344549866889 is the 2710083-rd square number.

7344549866889 is the 1355042-nd centered octagonal number.

It is an amenable number.

7344549866889 is a deficient number, since it is larger than the sum of its proper divisors (3615966816318).

7344549866889 is an frugal number, since it uses more digits than its factorization.

7344549866889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 306 counting only the distinct ones).

The product of its digits is 10032906240, while the sum is 81.

Multiplying 7344549866889 by its sum of digits (81), we get a square (594908539218009 = 24390747²).

The spelling of 7344549866889 in words is "seven trillion, three hundred forty-four billion, five hundred forty-nine million, eight hundred sixty-six thousand, eight hundred eighty-nine".