43868813 has 8 divisors (see below), whose sum is σ = 46248960. Its totient is φ = 41549040.

The previous prime is 43868807. The next prime is 43868827. The reversal of 43868813 is 31886834.

It is a happy number.

43868813 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.

It is a cyclic number.

It is not a de Polignac number, because 43868813 - 2⁶ = 43868749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43868873) 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 7 ways as a sum of consecutive naturals, for example, 13598 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (5781120).

Almost surely, 2^43868813 is an apocalyptic number.

It is an amenable number.

43868813 is a deficient number, since it is larger than the sum of its proper divisors (2380147).

43868813 is a wasteful number, since it uses less digits than its factorization.

43868813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30187.

The product of its digits is 110592, while the sum is 41.

The square root of 43868813 is about 6623.3536067464. The cubic root of 43868813 is about 352.6836237945.

The spelling of 43868813 in words is "forty-three million, eight hundred sixty-eight thousand, eight hundred thirteen".