89778589 has 4 divisors (see below), whose sum is σ = 91300320. Its totient is φ = 88256860.

The previous prime is 89778587. The next prime is 89778617. The reversal of 89778589 is 98587798.

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 89778589 - 2¹ = 89778587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89778587) 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, 760777 + ... + 760894.

It is an arithmetic number, because the mean of its divisors is an integer number (22825080).

Almost surely, 2^89778589 is an apocalyptic number.

It is an amenable number.

89778589 is a deficient number, since it is larger than the sum of its proper divisors (1521731).

89778589 is a wasteful number, since it uses less digits than its factorization.

89778589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521730.

The product of its digits is 10160640, while the sum is 61.

The square root of 89778589 is about 9475.1564103185. The cubic root of 89778589 is about 447.7726794368.

The spelling of 89778589 in words is "eighty-nine million, seven hundred seventy-eight thousand, five hundred eighty-nine".