440430123243 has 32 divisors (see below), whose sum is σ = 650379900672. Its totient is φ = 262865433600.

The previous prime is 440430123197. The next prime is 440430123269. The reversal of 440430123243 is 342321034044.

It is a happy number.

It is not a de Polignac number, because 440430123243 - 2⁹ = 440430122731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440430123243.

It is not an unprimeable number, because it can be changed into a prime (440430124243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7916403 + ... + 7971843.

It is an arithmetic number, because the mean of its divisors is an integer number (20324371896).

Almost surely, 2^440430123243 is an apocalyptic number.

440430123243 is a deficient number, since it is larger than the sum of its proper divisors (209949777429).

440430123243 is a wasteful number, since it uses less digits than its factorization.

440430123243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59115.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 440430123243 its reverse (342321034044), we get a palindrome (782751157287).

The spelling of 440430123243 in words is "four hundred forty billion, four hundred thirty million, one hundred twenty-three thousand, two hundred forty-three".