43443949 has 4 divisors (see below), whose sum is σ = 43494364. Its totient is φ = 43393536.

The previous prime is 43443947. The next prime is 43443971. The reversal of 43443949 is 94934434.

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 28965924 + 14478025 = 5382^2 + 3805^2 .

It is a cyclic number.

It is not a de Polignac number, because 43443949 - 2¹ = 43443947 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 (43443947) 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, 23892 + ... + 25645.

It is an arithmetic number, because the mean of its divisors is an integer number (10873591).

Almost surely, 2^43443949 is an apocalyptic number.

It is an amenable number.

43443949 is a deficient number, since it is larger than the sum of its proper divisors (50415).

43443949 is an equidigital number, since it uses as much as digits as its factorization.

43443949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50414.

The product of its digits is 186624, while the sum is 40.

The square root of 43443949 is about 6591.2023941008. The cubic root of 43443949 is about 351.5413625836.

The spelling of 43443949 in words is "forty-three million, four hundred forty-three thousand, nine hundred forty-nine".