389486784 has 112 divisors (see below), whose sum is σ = 1088501760. Its totient is φ = 122664960.

The previous prime is 389486777. The next prime is 389486843. The reversal of 389486784 is 487684983.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 392529 + ... + 393519.

Almost surely, 2^389486784 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 389486784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544250880).

389486784 is an abundant number, since it is smaller than the sum of its proper divisors (699014976).

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

389486784 is a wasteful number, since it uses less digits than its factorization.

389486784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 1108 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 389486784 is about 19735.4195293640. The cubic root of 389486784 is about 730.2937355478.

The spelling of 389486784 in words is "three hundred eighty-nine million, four hundred eighty-six thousand, seven hundred eighty-four".