43394641 has 4 divisors (see below), whose sum is σ = 43917552. Its totient is φ = 42871732.

The previous prime is 43394639. The next prime is 43394653. The reversal of 43394641 is 14649334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43394641 - 2¹ = 43394639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43394597 and 43394606.

It is not an unprimeable number, because it can be changed into a prime (43394671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261331 + ... + 261496.

It is an arithmetic number, because the mean of its divisors is an integer number (10979388).

Almost surely, 2^43394641 is an apocalyptic number.

It is an amenable number.

43394641 is a deficient number, since it is larger than the sum of its proper divisors (522911).

43394641 is an equidigital number, since it uses as much as digits as its factorization.

43394641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522910.

The product of its digits is 31104, while the sum is 34.

The square root of 43394641 is about 6587.4608917245. The cubic root of 43394641 is about 351.4083147992.

The spelling of 43394641 in words is "forty-three million, three hundred ninety-four thousand, six hundred forty-one".