400044331503 has 6 divisors (see below), whose sum is σ = 577841812184. Its totient is φ = 266696220996.

The previous prime is 400044331459. The next prime is 400044331543. The reversal of 400044331503 is 305133440004.

It is not a de Polignac number, because 400044331503 - 2¹³ = 400044323311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400044331543) 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 5 ways as a sum of consecutive naturals, for example, 22224685075 + ... + 22224685092.

Almost surely, 2^400044331503 is an apocalyptic number.

400044331503 is a deficient number, since it is larger than the sum of its proper divisors (177797480681).

400044331503 is a wasteful number, since it uses less digits than its factorization.

400044331503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44449370173 (or 44449370170 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 400044331503 its reverse (305133440004), we get a palindrome (705177771507).

The spelling of 400044331503 in words is "four hundred billion, forty-four million, three hundred thirty-one thousand, five hundred three".