99298723689 has 63 divisors (see below), whose sum is σ = 163799317927. Its totient is φ = 60124323600.

The previous prime is 99298723631. The next prime is 99298723691. The reversal of 99298723689 is 98632789299.

The square root of 99298723689 is 315117.

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

It can be written as a sum of positive squares in only one way, i.e., 65391184089 + 33907539600 = 255717^2 + 184140^2 .

It is not a de Polignac number, because 99298723689 - 2¹⁵ = 99298690921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99298723789) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 93589219 + ... + 93590279.

Almost surely, 2^99298723689 is an apocalyptic number.

99298723689 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99298723689 is the 315117-th square number.

99298723689 is the 157559-th centered octagonal number.

It is an amenable number.

99298723689 is a deficient number, since it is larger than the sum of its proper divisors (64500594238).

99298723689 is an frugal number, since it uses more digits than its factorization.

99298723689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162 (or 1075 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The spelling of 99298723689 in words is "ninety-nine billion, two hundred ninety-eight million, seven hundred twenty-three thousand, six hundred eighty-nine".