401444440430 has 128 divisors (see below), whose sum is σ = 813116693376. Its totient is φ = 141474816000.

The previous prime is 401444440391. The next prime is 401444440483. The reversal of 401444440430 is 34044444104.

It is a super-2 number, since 2×401444440430² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111109304 + ... + 111112916.

It is an arithmetic number, because the mean of its divisors is an integer number (6352474167).

Almost surely, 2^401444440430 is an apocalyptic number.

401444440430 is an abundant number, since it is smaller than the sum of its proper divisors (411672252946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401444440430 is a wasteful number, since it uses less digits than its factorization.

401444440430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 401444440430 its reverse (34044444104), we get a palindrome (435488884534).

It can be divided in two parts, 4014 and 44440430, that added together give a palindrome (44444444).

The spelling of 401444440430 in words is "four hundred one billion, four hundred forty-four million, four hundred forty thousand, four hundred thirty".