9489190685209 has 9 divisors (see below), whose sum is σ = 9726408784029. Its totient is φ = 9257623791840.

The previous prime is 9489190685159. The next prime is 9489190685263. The reversal of 9489190685209 is 9025860919849.

The square root of 9489190685209 is 3080453.

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

It can be written as a sum of positive squares in 4 ways, for example, as 514540809225 + 8974649875984 = 717315^2 + 2995772^2 .

It is not a de Polignac number, because 9489190685209 - 2²⁵ = 9489157130777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9489190683209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 126261007 + ... + 126336139.

Almost surely, 2^{9489190685209} is an apocalyptic number.

9489190685209 is the 3080453-rd square number.

9489190685209 is the 1540227-th centered octagonal number.

It is an amenable number.

9489190685209 is a deficient number, since it is larger than the sum of its proper divisors (237218098820).

9489190685209 is an frugal number, since it uses more digits than its factorization.

9489190685209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150348 (or 75174 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 70.

The spelling of 9489190685209 in words is "nine trillion, four hundred eighty-nine billion, one hundred ninety million, six hundred eighty-five thousand, two hundred nine".