384099978492 has 36 divisors (see below), whose sum is σ = 984594317616. Its totient is φ = 126230039040.

The previous prime is 384099978473. The next prime is 384099978529. The reversal of 384099978492 is 294879990483.

384099978492 is a `hidden beast` number, since 3 + 8 + 40 + 9 + 9 + 97 + 8 + 492 = 666.

384099978492 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 384099978492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75134373 + ... + 75139484.

It is an arithmetic number, because the mean of its divisors is an integer number (27349842156).

Almost surely, 2^384099978492 is an apocalyptic number.

It is an amenable number.

384099978492 is an abundant number, since it is smaller than the sum of its proper divisors (600494339124).

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

384099978492 is a wasteful number, since it uses less digits than its factorization.

384099978492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150273938 (or 150273933 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

Adding to 384099978492 its sum of digits (72), we get a square (384099978564 = 619758²).

The spelling of 384099978492 in words is "three hundred eighty-four billion, ninety-nine million, nine hundred seventy-eight thousand, four hundred ninety-two".