43721934 has 8 divisors (see below), whose sum is σ = 87443880. Its totient is φ = 14573976.

The previous prime is 43721921. The next prime is 43721939. The reversal of 43721934 is 43912734.

43721934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

43721934 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 43721895 and 43721904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43721939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643489 + ... + 3643500.

It is an arithmetic number, because the mean of its divisors is an integer number (10930485).

Almost surely, 2^43721934 is an apocalyptic number.

43721934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

43721934 is a wasteful number, since it uses less digits than its factorization.

43721934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286994.

The product of its digits is 18144, while the sum is 33.

The square root of 43721934 is about 6612.2563471178. The cubic root of 43721934 is about 352.2895721096.

The spelling of 43721934 in words is "forty-three million, seven hundred twenty-one thousand, nine hundred thirty-four".