440144134430 has 384 divisors, whose sum is σ = 1100397312000. Its totient is φ = 123295011840.

The previous prime is 440144134427. The next prime is 440144134433. The reversal of 440144134430 is 34431441044.

It is an interprime number because it is at equal distance from previous prime (440144134427) and next prime (440144134433).

It is a super-2 number, since 2×440144134430² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440144134433) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1161329981 + ... + 1161330359.

It is an arithmetic number, because the mean of its divisors is an integer number (2865618000).

Almost surely, 2^440144134430 is an apocalyptic number.

440144134430 is an abundant number, since it is smaller than the sum of its proper divisors (660253177570).

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

440144134430 is a wasteful number, since it uses less digits than its factorization.

440144134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 440144134430 its reverse (34431441044), we get a palindrome (474575575474).

The spelling of 440144134430 in words is "four hundred forty billion, one hundred forty-four million, one hundred thirty-four thousand, four hundred thirty".