89923816129 has 9 divisors (see below), whose sum is σ = 104607697377. Its totient is φ = 77075757444.

The previous prime is 89923816121. The next prime is 89923816139. The reversal of 89923816129 is 92161832998.

The square root of 89923816129 is 299873.

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

It is not a de Polignac number, because 89923816129 - 2³ = 89923816121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89923816121) 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, 2077692 + ... + 2120530.

Almost surely, 2^89923816129 is an apocalyptic number.

89923816129 is the 299873-rd square number.

89923816129 is the 149937-th centered octagonal number.

It is an amenable number.

89923816129 is a deficient number, since it is larger than the sum of its proper divisors (14683881248).

89923816129 is an frugal number, since it uses more digits than its factorization.

89923816129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85692 (or 42846 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 58.

The spelling of 89923816129 in words is "eighty-nine billion, nine hundred twenty-three million, eight hundred sixteen thousand, one hundred twenty-nine".