43213916 has 12 divisors (see below), whose sum is σ = 75693240. Its totient is φ = 21587280.

The previous prime is 43213913. The next prime is 43213957. The reversal of 43213916 is 61931234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43213913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (6307770).

Almost surely, 2^43213916 is an apocalyptic number.

It is an amenable number.

43213916 is a deficient number, since it is larger than the sum of its proper divisors (32479324).

43213916 is a wasteful number, since it uses less digits than its factorization.

43213916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9844 (or 9842 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 43213916 is about 6573.7292308096. The cubic root of 43213916 is about 350.9198010507.

The spelling of 43213916 in words is "forty-three million, two hundred thirteen thousand, nine hundred sixteen".