440434021331 has 4 divisors (see below), whose sum is σ = 440546294952. Its totient is φ = 440321747712.

The previous prime is 440434021301. The next prime is 440434021381. The reversal of 440434021331 is 133120434044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440434021331 - 2¹⁴ = 440434004947 is a prime.

It is a super-2 number, since 2×440434021331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440434021294 and 440434021303.

It is not an unprimeable number, because it can be changed into a prime (440434021301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56130926 + ... + 56138771.

It is an arithmetic number, because the mean of its divisors is an integer number (110136573738).

Almost surely, 2^440434021331 is an apocalyptic number.

440434021331 is a deficient number, since it is larger than the sum of its proper divisors (112273621).

440434021331 is a wasteful number, since it uses less digits than its factorization.

440434021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112273620.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 440434021331 its reverse (133120434044), we get a palindrome (573554455375).

The spelling of 440434021331 in words is "four hundred forty billion, four hundred thirty-four million, twenty-one thousand, three hundred thirty-one".