99406224051289 has 27 divisors (see below), whose sum is σ = 102511716912189. Its totient is φ = 96394136598720.

The previous prime is 99406224051283. The next prime is 99406224051301. The reversal of 99406224051289 is 98215042260499.

The square root of 99406224051289 is 9970267.

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 25946034375625 + 73460189675664 = 5093725^2 + 8570892^2 .

It is a de Polignac number, because none of the positive numbers 2^k-99406224051289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99406224051283) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44397597832 + ... + 44397600070.

It is an arithmetic number, because the mean of its divisors is an integer number (3796730256007).

Almost surely, 2^{99406224051289} is an apocalyptic number.

99406224051289 is the 9970267-th square number.

99406224051289 is the 4985134-th centered octagonal number.

It is an amenable number.

99406224051289 is a deficient number, since it is larger than the sum of its proper divisors (3105492860900).

99406224051289 is an frugal number, since it uses more digits than its factorization.

99406224051289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746 (or 2373 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 99406224051289 in words is "ninety-nine trillion, four hundred six billion, two hundred twenty-four million, fifty-one thousand, two hundred eighty-nine".