440000055631 has 2 divisors, whose sum is σ = 440000055632. Its totient is φ = 440000055630.

The previous prime is 440000055571. The next prime is 440000055643. The reversal of 440000055631 is 136550000044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440000055631 - 2⁹ = 440000055119 is a prime.

It is a super-2 number, since 2×440000055631² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 440000055631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440000055431) 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 as a sum of consecutive naturals, namely, 220000027815 + 220000027816.

It is an arithmetic number, because the mean of its divisors is an integer number (220000027816).

Almost surely, 2^440000055631 is an apocalyptic number.

440000055631 is a deficient number, since it is larger than the sum of its proper divisors (1).

440000055631 is an equidigital number, since it uses as much as digits as its factorization.

440000055631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 440000055631 its reverse (136550000044), we get a palindrome (576550055675).

The spelling of 440000055631 in words is "four hundred forty billion, fifty-five thousand, six hundred thirty-one".