389452406784 has 448 divisors, whose sum is σ = 1238754017280. Its totient is φ = 106486824960.

The previous prime is 389452406719. The next prime is 389452406789. The reversal of 389452406784 is 487604254983.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (389452406789) 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 31 ways as a sum of consecutive naturals, for example, 549297822 + ... + 549298530.

Almost surely, 2^389452406784 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 389452406784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619377008640).

389452406784 is an abundant number, since it is smaller than the sum of its proper divisors (849301610496).

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

389452406784 is a wasteful number, since it uses less digits than its factorization.

389452406784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 389452406784 in words is "three hundred eighty-nine billion, four hundred fifty-two million, four hundred six thousand, seven hundred eighty-four".