89004965569 has 27 divisors (see below), whose sum is σ = 98458309467. Its totient is φ = 80422108416.

The previous prime is 89004965563. The next prime is 89004965591. The reversal of 89004965569 is 96556940098.

The square root of 89004965569 is 298337.

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

It can be written as a sum of positive squares in 13 ways, for example, as 86162796225 + 2842169344 = 293535^2 + 53312^2 .

It is not a de Polignac number, because 89004965569 - 2³ = 89004965561 is a prime.

It is a super-2 number, since 2×89004965569² (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 (89004965561) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 205553977 + ... + 205554409.

Almost surely, 2^89004965569 is an apocalyptic number.

89004965569 is the 298337-th square number.

89004965569 is the 149169-th centered octagonal number.

It is an amenable number.

89004965569 is a deficient number, since it is larger than the sum of its proper divisors (9453343898).

89004965569 is an frugal number, since it uses more digits than its factorization.

89004965569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 89004965569 in words is "eighty-nine billion, four million, nine hundred sixty-five thousand, five hundred sixty-nine".