89659746493 has 4 divisors (see below), whose sum is σ = 89727723360. Its totient is φ = 89591769628.

The previous prime is 89659746487. The next prime is 89659746503. The reversal of 89659746493 is 39464795698.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39464795698 = 2 ⋅19732397849.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89659746493 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 (89659746443) 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, 33986455 + ... + 33989092.

It is an arithmetic number, because the mean of its divisors is an integer number (22431930840).

Almost surely, 2^89659746493 is an apocalyptic number.

It is an amenable number.

89659746493 is a deficient number, since it is larger than the sum of its proper divisors (67976867).

89659746493 is a wasteful number, since it uses less digits than its factorization.

89659746493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67976866.

The product of its digits is 352719360, while the sum is 70.

The spelling of 89659746493 in words is "eighty-nine billion, six hundred fifty-nine million, seven hundred forty-six thousand, four hundred ninety-three".