89724667993 has 32 divisors (see below), whose sum is σ = 97735766400. Its totient is φ = 82109085696.

The previous prime is 89724667979. The next prime is 89724667997. The reversal of 89724667993 is 39976642798.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89724667993 is a prime.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89724667997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13205005 + ... + 13211797.

It is an arithmetic number, because the mean of its divisors is an integer number (3054242700).

Almost surely, 2^89724667993 is an apocalyptic number.

It is an amenable number.

89724667993 is a deficient number, since it is larger than the sum of its proper divisors (8011098407).

89724667993 is a wasteful number, since it uses less digits than its factorization.

89724667993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081.

The product of its digits is 246903552, while the sum is 70.

The spelling of 89724667993 in words is "eighty-nine billion, seven hundred twenty-four million, six hundred sixty-seven thousand, nine hundred ninety-three".