400424440203 has 12 divisors (see below), whose sum is σ = 608832482440. Its totient is φ = 252899646336.

The previous prime is 400424440183. The next prime is 400424440211. The reversal of 400424440203 is 302044424004.

It is a happy number.

It is not a de Polignac number, because 400424440203 - 2⁶ = 400424440139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400424440303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1170831526 + ... + 1170831867.

Almost surely, 2^400424440203 is an apocalyptic number.

400424440203 is a deficient number, since it is larger than the sum of its proper divisors (208408042237).

400424440203 is a wasteful number, since it uses less digits than its factorization.

400424440203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341663418 (or 2341663415 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 400424440203 its reverse (302044424004), we get a palindrome (702468864207).

The spelling of 400424440203 in words is "four hundred billion, four hundred twenty-four million, four hundred forty thousand, two hundred three".