89154196569 has 9 divisors (see below), whose sum is σ = 128779577823. Its totient is φ = 59435533872.

The previous prime is 89154196567. The next prime is 89154196631. The reversal of 89154196569 is 96569145198.

The square root of 89154196569 is 298587.

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

89154196569 is a `hidden beast` number, since 8 + 9 + 1 + 54 + 19 + 6 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4961370969 + 84192825600 = 70437^2 + 290160^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 89154196569 - 2¹ = 89154196567 is a prime.

It is a super-2 number, since 2×89154196569² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89154196561) 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, 845997 + ... + 945525.

Almost surely, 2^89154196569 is an apocalyptic number.

89154196569 is the 298587-th square number.

89154196569 is the 149294-th centered octagonal number.

It is an amenable number.

89154196569 is a deficient number, since it is larger than the sum of its proper divisors (39625381254).

89154196569 is an frugal number, since it uses more digits than its factorization.

89154196569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199064 (or 99532 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 63.

The spelling of 89154196569 in words is "eighty-nine billion, one hundred fifty-four million, one hundred ninety-six thousand, five hundred sixty-nine".