43216349 has 8 divisors (see below), whose sum is σ = 47331648. Its totient is φ = 39132160.

The previous prime is 43216343. The next prime is 43216391. The reversal of 43216349 is 94361234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43216349 - 2²⁰ = 42167773 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43216343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817 + ... + 10470.

It is an arithmetic number, because the mean of its divisors is an integer number (5916456).

Almost surely, 2^43216349 is an apocalyptic number.

It is an amenable number.

43216349 is a deficient number, since it is larger than the sum of its proper divisors (4115299).

43216349 is a wasteful number, since it uses less digits than its factorization.

43216349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555.

The product of its digits is 15552, while the sum is 32.

The square root of 43216349 is about 6573.9142829824. The cubic root of 43216349 is about 350.9263866751.

The spelling of 43216349 in words is "forty-three million, two hundred sixteen thousand, three hundred forty-nine".