43691412 has 48 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 13597920.

The previous prime is 43691407. The next prime is 43691423. The reversal of 43691412 is 21419634.

43691412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 43691412.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14839 + ... + 17537.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^43691412 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 43691412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432000).

43691412 is an abundant number, since it is smaller than the sum of its proper divisors (65172588).

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

43691412 is a wasteful number, since it uses less digits than its factorization.

43691412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2794 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 43691412 is about 6609.9479574351. The cubic root of 43691412 is about 352.2075760006.

The spelling of 43691412 in words is "forty-three million, six hundred ninety-one thousand, four hundred twelve".