400304043 has 6 divisors (see below), whose sum is σ = 578216964. Its totient is φ = 266869356.

The previous prime is 400304017. The next prime is 400304053. The reversal of 400304043 is 340403004.

It is not a de Polignac number, because 400304043 - 2⁶ = 400303979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400304053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22239105 + ... + 22239122.

It is an arithmetic number, because the mean of its divisors is an integer number (96369494).

Almost surely, 2^400304043 is an apocalyptic number.

400304043 is a deficient number, since it is larger than the sum of its proper divisors (177912921).

400304043 is a wasteful number, since it uses less digits than its factorization.

400304043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44478233 (or 44478230 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 400304043 is about 20007.5996311402. The cubic root of 400304043 is about 736.9929364462.

Adding to 400304043 its reverse (340403004), we get a palindrome (740707047).

The spelling of 400304043 in words is "four hundred million, three hundred four thousand, forty-three".