404402043 has 4 divisors (see below), whose sum is σ = 539202728. Its totient is φ = 269601360.

The previous prime is 404402041. The next prime is 404402051. The reversal of 404402043 is 340204404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 404402043 - 2¹ = 404402041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404402041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67400338 + ... + 67400343.

It is an arithmetic number, because the mean of its divisors is an integer number (134800682).

Almost surely, 2^404402043 is an apocalyptic number.

404402043 is a deficient number, since it is larger than the sum of its proper divisors (134800685).

404402043 is a wasteful number, since it uses less digits than its factorization.

404402043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134800684.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 404402043 is about 20109.7499487189. The cubic root of 404402043 is about 739.4993222668.

Adding to 404402043 its reverse (340204404), we get a palindrome (744606447).

The spelling of 404402043 in words is "four hundred four million, four hundred two thousand, forty-three".