440000020043430 has 256 divisors, whose sum is σ = 1328293467389952. Its totient is φ = 90614635776000.

The previous prime is 440000020043411. The next prime is 440000020043431. The reversal of 440000020043430 is 34340020000044.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 440000020043430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440000020043431) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6941017035 + ... + 6941080425.

It is an arithmetic number, because the mean of its divisors is an integer number (5188646356992).

Almost surely, 2^{440000020043430} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440000020043430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664146733694976).

440000020043430 is an abundant number, since it is smaller than the sum of its proper divisors (888293447346522).

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

440000020043430 is a wasteful number, since it uses less digits than its factorization.

440000020043430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90123.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 440000020043430 its reverse (34340020000044), we get a palindrome (474340040043474).

The spelling of 440000020043430 in words is "four hundred forty trillion, twenty million, forty-three thousand, four hundred thirty".