43938401 has 4 divisors (see below), whose sum is σ = 47318292. Its totient is φ = 40558512.

The previous prime is 43938383. The next prime is 43938403. The reversal of 43938401 is 10483934.

43938401 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 18284176 + 25654225 = 4276^2 + 5065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43938401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43938403) 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, 1689926 + ... + 1689951.

It is an arithmetic number, because the mean of its divisors is an integer number (11829573).

Almost surely, 2^43938401 is an apocalyptic number.

It is an amenable number.

43938401 is a deficient number, since it is larger than the sum of its proper divisors (3379891).

43938401 is a wasteful number, since it uses less digits than its factorization.

43938401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379890.

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

The square root of 43938401 is about 6628.6047551502. The cubic root of 43938401 is about 352.8700096776.

The spelling of 43938401 in words is "forty-three million, nine hundred thirty-eight thousand, four hundred one".