43404005 has 4 divisors (see below), whose sum is σ = 52084812. Its totient is φ = 34723200.

The previous prime is 43403951. The next prime is 43404017. The reversal of 43404005 is 50040434.

It is a happy number.

43404005 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: 50040434 = 2 ⋅25020217.

It can be written as a sum of positive squares in 2 ways, for example, as 21883684 + 21520321 = 4678^2 + 4639^2 .

It is not a de Polignac number, because 43404005 - 2¹⁰ = 43402981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4340396 + ... + 4340405.

It is an arithmetic number, because the mean of its divisors is an integer number (13021203).

Almost surely, 2^43404005 is an apocalyptic number.

It is an amenable number.

43404005 is a deficient number, since it is larger than the sum of its proper divisors (8680807).

43404005 is an equidigital number, since it uses as much as digits as its factorization.

43404005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8680806.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 43404005 is about 6588.1715976438. The cubic root of 43404005 is about 351.4335894316.

Adding to 43404005 its reverse (50040434), we get a palindrome (93444439).

The spelling of 43404005 in words is "forty-three million, four hundred four thousand, five".