89724667992 has 32 divisors (see below), whose sum is σ = 228543968880. Its totient is φ = 29343916160.

The previous prime is 89724667979. The next prime is 89724667997. The reversal of 89724667992 is 29976642798.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35267859 + ... + 35270402.

Almost surely, 2^89724667992 is an apocalyptic number.

It is an amenable number.

89724667992 is an abundant number, since it is smaller than the sum of its proper divisors (138819300888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89724667992 is a wasteful number, since it uses less digits than its factorization.

89724667992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70538323 (or 70538319 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The spelling of 89724667992 in words is "eighty-nine billion, seven hundred twenty-four million, six hundred sixty-seven thousand, nine hundred ninety-two".