43684013 has 8 divisors (see below), whose sum is σ = 45627360. Its totient is φ = 41780880.

The previous prime is 43683989. The next prime is 43684019. The reversal of 43684013 is 31048634.

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 43684013 - 2⁶ = 43683949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43684019) 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, 7823 + ... + 12188.

It is an arithmetic number, because the mean of its divisors is an integer number (5703420).

Almost surely, 2^43684013 is an apocalyptic number.

It is an amenable number.

43684013 is a deficient number, since it is larger than the sum of its proper divisors (1943347).

43684013 is a wasteful number, since it uses less digits than its factorization.

43684013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 43684013 is about 6609.3882470316. The cubic root of 43684013 is about 352.1876931384.

The spelling of 43684013 in words is "forty-three million, six hundred eighty-four thousand, thirteen".