89992449792 has 216 divisors, whose sum is σ = 309573406800. Its totient is φ = 25712031744.

The previous prime is 89992449779. The next prime is 89992449829. The reversal of 89992449792 is 29794429998.

89992449792 is a `hidden beast` number, since 8 + 9 + 9 + 92 + 449 + 7 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 89992449792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205834 + ... + 471542.

Almost surely, 2^89992449792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89992449792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154786703400).

89992449792 is an abundant number, since it is smaller than the sum of its proper divisors (219580957008).

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

89992449792 is a wasteful number, since it uses less digits than its factorization.

89992449792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265748 (or 265721 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The spelling of 89992449792 in words is "eighty-nine billion, nine hundred ninety-two million, four hundred forty-nine thousand, seven hundred ninety-two".