389547216 has 30 divisors (see below), whose sum is σ = 1090191570. Its totient is φ = 129849024.

The previous prime is 389547173. The next prime is 389547241. The reversal of 389547216 is 612745983.

389547216 is a `hidden beast` number, since 3 + 89 + 547 + 21 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 388247616 + 1299600 = 19704^2 + 1140^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1352451 + ... + 1352738.

It is an arithmetic number, because the mean of its divisors is an integer number (36339719).

Almost surely, 2^389547216 is an apocalyptic number.

389547216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

389547216 is an abundant number, since it is smaller than the sum of its proper divisors (700644354).

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

389547216 is a wasteful number, since it uses less digits than its factorization.

389547216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705203 (or 2705194 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 389547216 is about 19736.9505243338. The cubic root of 389547216 is about 730.3315039056.

The spelling of 389547216 in words is "three hundred eighty-nine million, five hundred forty-seven thousand, two hundred sixteen".