89898987593 has 4 divisors (see below), whose sum is σ = 89967771600. Its totient is φ = 89830203588.

The previous prime is 89898987583. The next prime is 89898987601. The reversal of 89898987593 is 39578989898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89898987593 - 2¹² = 89898983497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89898987583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34390043 + ... + 34392656.

It is an arithmetic number, because the mean of its divisors is an integer number (22491942900).

Almost surely, 2^89898987593 is an apocalyptic number.

It is an amenable number.

89898987593 is a deficient number, since it is larger than the sum of its proper divisors (68784007).

89898987593 is a wasteful number, since it uses less digits than its factorization.

89898987593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68784006.

The product of its digits is 2821754880, while the sum is 83.

The spelling of 89898987593 in words is "eighty-nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, five hundred ninety-three".