389484918504 has 400 divisors, whose sum is σ = 1221487268100. Its totient is φ = 115918387200.

The previous prime is 389484918461. The next prime is 389484918509. The reversal of 389484918504 is 405819484983.

389484918504 is a `hidden beast` number, since 3 + 8 + 94 + 8 + 491 + 8 + 50 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 333125208900 + 56359709604 = 577170^2 + 237402^2 .

It is not an unprimeable number, because it can be changed into a prime (389484918509) by changing a digit.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 578729112 + ... + 578729784.

Almost surely, 2^389484918504 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 389484918504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610743634050).

389484918504 is an abundant number, since it is smaller than the sum of its proper divisors (832002349596).

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

389484918504 is an equidigital number, since it uses as much as digits as its factorization.

389484918504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 389484918504 in words is "three hundred eighty-nine billion, four hundred eighty-four million, nine hundred eighteen thousand, five hundred four".