99689853169 has 9 divisors (see below), whose sum is σ = 101136454041. Its totient is φ = 98263669140.

The previous prime is 99689853127. The next prime is 99689853253. The reversal of 99689853169 is 96135898699.

The square root of 99689853169 is 315737.

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

It is not a de Polignac number, because 99689853169 - 2⁹ = 99689852657 is a prime.

It is a super-2 number, since 2×99689853169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99689853269) 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, 22415104 + ... + 22419550.

Almost surely, 2^99689853169 is an apocalyptic number.

99689853169 is the 315737-th square number.

99689853169 is the 157869-th centered octagonal number.

It is an amenable number.

99689853169 is a deficient number, since it is larger than the sum of its proper divisors (1446600872).

99689853169 is an frugal number, since it uses more digits than its factorization.

99689853169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036 (or 4518 counting only the distinct ones).

The product of its digits is 226748160, while the sum is 73.

The spelling of 99689853169 in words is "ninety-nine billion, six hundred eighty-nine million, eight hundred fifty-three thousand, one hundred sixty-nine".