400040043003 has 12 divisors (see below), whose sum is σ = 599236937208. Its totient is φ = 266693361840.

The previous prime is 400040043001. The next prime is 400040043079. The reversal of 400040043003 is 300340040004.

It is not a de Polignac number, because 400040043003 - 2¹ = 400040043001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400040043001) 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, 823127418 + ... + 823127903.

It is an arithmetic number, because the mean of its divisors is an integer number (49936411434).

Almost surely, 2^400040043003 is an apocalyptic number.

400040043003 is a deficient number, since it is larger than the sum of its proper divisors (199196894205).

400040043003 is an equidigital number, since it uses as much as digits as its factorization.

400040043003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646255336 (or 1646255324 counting only the distinct ones).

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

Adding to 400040043003 its reverse (300340040004), we get a palindrome (700380083007).

The spelling of 400040043003 in words is "four hundred billion, forty million, forty-three thousand, three".