389493349440 has 224 divisors, whose sum is σ = 1332302111616. Its totient is φ = 95836815360.

The previous prime is 389493349439. The next prime is 389493349481. The reversal of 389493349440 is 44943394983.

389493349440 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42839295 + ... + 42848385.

It is an arithmetic number, because the mean of its divisors is an integer number (5947777284).

Almost surely, 2^389493349440 is an apocalyptic number.

389493349440 is a gapful number since it is divisible by the number (30) 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 389493349440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666151055808).

389493349440 is an abundant number, since it is smaller than the sum of its proper divisors (942808762176).

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

389493349440 is a wasteful number, since it uses less digits than its factorization.

389493349440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12557 (or 12547 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 60.

The spelling of 389493349440 in words is "three hundred eighty-nine billion, four hundred ninety-three million, three hundred forty-nine thousand, four hundred forty".