89429108209 has 45 divisors (see below), whose sum is σ = 111135240587. Its totient is φ = 71943531072.

The previous prime is 89429108189. The next prime is 89429108213. The reversal of 89429108209 is 90280192498.

The square root of 89429108209 is 299047.

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., 69624738225 + 19804369984 = 263865^2 + 140728^2 .

It is not a de Polignac number, because 89429108209 - 2⁵ = 89429108177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89429108009) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 249105972 + ... + 249106330.

Almost surely, 2^89429108209 is an apocalyptic number.

89429108209 is the 299047-th square number.

89429108209 is the 149524-th centered octagonal number.

It is an amenable number.

89429108209 is a deficient number, since it is larger than the sum of its proper divisors (21706132378).

89429108209 is an frugal number, since it uses more digits than its factorization.

89429108209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 89429108209 in words is "eighty-nine billion, four hundred twenty-nine million, one hundred eight thousand, two hundred nine".