43389216 has 96 divisors (see below), whose sum is σ = 136321920. Its totient is φ = 13347072.

The previous prime is 43389211. The next prime is 43389221. The reversal of 43389216 is 61298334.

43389216 is a `hidden beast` number, since 433 + 8 + 9 + 216 = 666.

It is an interprime number because it is at equal distance from previous prime (43389211) and next prime (43389221).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (43389211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9301 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (1420020).

Almost surely, 2^43389216 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 43389216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68160960).

43389216 is an abundant number, since it is smaller than the sum of its proper divisors (92932704).

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

43389216 is a wasteful number, since it uses less digits than its factorization.

43389216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895 (or 3881 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43389216 is about 6587.0491117040. The cubic root of 43389216 is about 351.3936703676.

The spelling of 43389216 in words is "forty-three million, three hundred eighty-nine thousand, two hundred sixteen".