440023619953 has 6 divisors (see below), whose sum is σ = 452237571366. Its totient is φ = 428131088352.

The previous prime is 440023619947. The next prime is 440023619977. The reversal of 440023619953 is 359916320044.

It can be written as a sum of positive squares in 3 ways, for example, as 353059379344 + 86964240609 = 594188^2 + 294897^2 .

It is not a de Polignac number, because 440023619953 - 2¹³ = 440023611761 is a prime.

It is a super-2 number, since 2×440023619953² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440023619923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160708500 + ... + 160711237.

It is an arithmetic number, because the mean of its divisors is an integer number (75372928561).

Almost surely, 2^440023619953 is an apocalyptic number.

It is an amenable number.

440023619953 is a deficient number, since it is larger than the sum of its proper divisors (12213951413).

440023619953 is an equidigital number, since it uses as much as digits as its factorization.

440023619953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321419811 (or 321419774 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

Adding to 440023619953 its reverse (359916320044), we get a palindrome (799939939997).

The spelling of 440023619953 in words is "four hundred forty billion, twenty-three million, six hundred nineteen thousand, nine hundred fifty-three".