43982401 has 4 divisors (see below), whose sum is σ = 44139204. Its totient is φ = 43825600.

The previous prime is 43982363. The next prime is 43982423. The reversal of 43982401 is 10428934.

43982401 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, and also an emirpimes, since its reverse is a distinct semiprime: 10428934 = 2 ⋅5214467.

It can be written as a sum of positive squares in 2 ways, for example, as 25492401 + 18490000 = 5049^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 43982401 - 2¹³ = 43974209 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43982461) 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, 77980 + ... + 78541.

It is an arithmetic number, because the mean of its divisors is an integer number (11034801).

Almost surely, 2^43982401 is an apocalyptic number.

It is an amenable number.

43982401 is a deficient number, since it is larger than the sum of its proper divisors (156803).

43982401 is a wasteful number, since it uses less digits than its factorization.

43982401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156802.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 43982401 is about 6631.9228734960. The cubic root of 43982401 is about 352.9877586191.

The spelling of 43982401 in words is "forty-three million, nine hundred eighty-two thousand, four hundred one".