43216444 has 24 divisors (see below), whose sum is σ = 78427440. Its totient is φ = 20820096.

The previous prime is 43216441. The next prime is 43216457. The reversal of 43216444 is 44461234.

It is a super-2 number, since 2×43216444² = 3735322064010272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43216441) 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, 14472 + ... + 17200.

It is an arithmetic number, because the mean of its divisors is an integer number (3267810).

Almost surely, 2^43216444 is an apocalyptic number.

It is an amenable number.

43216444 is a deficient number, since it is larger than the sum of its proper divisors (35210996).

43216444 is a wasteful number, since it uses less digits than its factorization.

43216444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 43216444 is about 6573.9215085062. The cubic root of 43216444 is about 350.9266438153.

Adding to 43216444 its reverse (44461234), we get a palindrome (87677678).

It can be divided in two parts, 43216 and 444, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 43216444 in words is "forty-three million, two hundred sixteen thousand, four hundred forty-four".