440320433 has 16 divisors (see below), whose sum is σ = 512434560. Its totient is φ = 370573056.

The previous prime is 440320423. The next prime is 440320471. The reversal of 440320433 is 334023044.

It is a happy number.

It is not a de Polignac number, because 440320433 - 2¹⁰ = 440319409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 440320399 and 440320408.

It is not an unprimeable number, because it can be changed into a prime (440320403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83666 + ... + 88772.

It is an arithmetic number, because the mean of its divisors is an integer number (32027160).

Almost surely, 2^440320433 is an apocalyptic number.

It is an amenable number.

440320433 is a deficient number, since it is larger than the sum of its proper divisors (72114127).

440320433 is a wasteful number, since it uses less digits than its factorization.

440320433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 440320433 is about 20983.8135952453. The cubic root of 440320433 is about 760.7750824204.

Adding to 440320433 its reverse (334023044), we get a palindrome (774343477).

The spelling of 440320433 in words is "four hundred forty million, three hundred twenty thousand, four hundred thirty-three".