12389454792 has 640 divisors, whose sum is σ = 44493926400. Its totient is φ = 3163276800.

The previous prime is 12389454767. The next prime is 12389454799. The reversal of 12389454792 is 29745498321.

12389454792 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 9 + 4 + 547 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12389454799) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 54578983 + ... + 54579209.

It is an arithmetic number, because the mean of its divisors is an integer number (69521760).

Almost surely, 2^12389454792 is an apocalyptic number.

12389454792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12389454792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22246963200).

12389454792 is an abundant number, since it is smaller than the sum of its proper divisors (32104471608).

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

12389454792 is a wasteful number, since it uses less digits than its factorization.

12389454792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 306 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 12389454792 in words is "twelve billion, three hundred eighty-nine million, four hundred fifty-four thousand, seven hundred ninety-two".