89845647993 has 12 divisors (see below), whose sum is σ = 130169127088. Its totient is φ = 59716138680.

The previous prime is 89845647959. The next prime is 89845648003. The reversal of 89845647993 is 39974654898.

89845647993 is a `hidden beast` number, since 89 + 8 + 456 + 4 + 7 + 9 + 93 = 666.

It is not a de Polignac number, because 89845647993 - 2⁸ = 89845647737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89845647953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15076855 + ... + 15082812.

Almost surely, 2^89845647993 is an apocalyptic number.

It is an amenable number.

89845647993 is a deficient number, since it is larger than the sum of its proper divisors (40323479095).

89845647993 is a wasteful number, since it uses less digits than its factorization.

89845647993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30160004 (or 30160001 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 89845647993 in words is "eighty-nine billion, eight hundred forty-five million, six hundred forty-seven thousand, nine hundred ninety-three".