43394443 has 4 divisors (see below), whose sum is σ = 43426240. Its totient is φ = 43362648.

The previous prime is 43394437. The next prime is 43394453. The reversal of 43394443 is 34449334.

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

It is a cyclic number.

It is not a de Polignac number, because 43394443 - 2¹⁷ = 43263371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43394399 and 43394408.

It is not an unprimeable number, because it can be changed into a prime (43394413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13755 + ... + 16612.

It is an arithmetic number, because the mean of its divisors is an integer number (10856560).

Almost surely, 2^43394443 is an apocalyptic number.

43394443 is a deficient number, since it is larger than the sum of its proper divisors (31797).

43394443 is a wasteful number, since it uses less digits than its factorization.

43394443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31796.

The product of its digits is 62208, while the sum is 34.

The square root of 43394443 is about 6587.4458631552. The cubic root of 43394443 is about 351.4077803327.

The spelling of 43394443 in words is "forty-three million, three hundred ninety-four thousand, four hundred forty-three".