9440405631 has 16 divisors (see below), whose sum is σ = 14311038720. Its totient is φ = 6147240120.

The previous prime is 9440405629. The next prime is 9440405647. The reversal of 9440405631 is 1365040449.

9440405631 is a `hidden beast` number, since 94 + 4 + 0 + 4 + 0 + 563 + 1 = 666.

9440405631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9440405631 - 2¹ = 9440405629 is a prime.

It is a super-2 number, since 2×9440405631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9440406631) 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 15 ways as a sum of consecutive naturals, for example, 4064475 + ... + 4066796.

It is an arithmetic number, because the mean of its divisors is an integer number (894439920).

Almost surely, 2^9440405631 is an apocalyptic number.

9440405631 is a deficient number, since it is larger than the sum of its proper divisors (4870633089).

9440405631 is a wasteful number, since it uses less digits than its factorization.

9440405631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131323 (or 8131317 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 9440405631 is about 97161.7498350045. The cubic root of 9440405631 is about 2113.4738812084.

The spelling of 9440405631 in words is "nine billion, four hundred forty million, four hundred five thousand, six hundred thirty-one".