89779857589 has 8 divisors (see below), whose sum is σ = 90041235480. Its totient is φ = 89518657536.

The previous prime is 89779857571. The next prime is 89779857613. The reversal of 89779857589 is 98575897798.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28817778564 + 60962079025 = 169758^2 + 246905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89779857589 is a prime.

It is a super-3 number, since 3×89779857589³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89779857529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002357 + ... + 1088245.

It is an arithmetic number, because the mean of its divisors is an integer number (11255154435).

Almost surely, 2^89779857589 is an apocalyptic number.

It is an amenable number.

89779857589 is a deficient number, since it is larger than the sum of its proper divisors (261377891).

89779857589 is a wasteful number, since it uses less digits than its factorization.

89779857589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88919.

The product of its digits is 3200601600, while the sum is 82.

The spelling of 89779857589 in words is "eighty-nine billion, seven hundred seventy-nine million, eight hundred fifty-seven thousand, five hundred eighty-nine".