43849013 has 4 divisors (see below), whose sum is σ = 47222028. Its totient is φ = 40476000.

The previous prime is 43848997. The next prime is 43849027. The reversal of 43849013 is 31094834.

43849013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28654609 + 15194404 = 5353^2 + 3898^2 .

It is a cyclic number.

It is not a de Polignac number, because 43849013 - 2⁴ = 43848997 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 (43849513) 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, 1686488 + ... + 1686513.

It is an arithmetic number, because the mean of its divisors is an integer number (11805507).

Almost surely, 2^43849013 is an apocalyptic number.

It is an amenable number.

43849013 is a deficient number, since it is larger than the sum of its proper divisors (3373015).

43849013 is a wasteful number, since it uses less digits than its factorization.

43849013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373014.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 43849013 is about 6621.8587269739. The cubic root of 43849013 is about 352.6305550642.

The spelling of 43849013 in words is "forty-three million, eight hundred forty-nine thousand, thirteen".