440423313 has 8 divisors (see below), whose sum is σ = 640615776. Its totient is φ = 266923200.

The previous prime is 440423309. The next prime is 440423339. The reversal of 440423313 is 313324044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440423313 - 2² = 440423309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440423303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6673048 + ... + 6673113.

It is an arithmetic number, because the mean of its divisors is an integer number (80076972).

Almost surely, 2^440423313 is an apocalyptic number.

It is an amenable number.

440423313 is a deficient number, since it is larger than the sum of its proper divisors (200192463).

440423313 is a wasteful number, since it uses less digits than its factorization.

440423313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13346175.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 440423313 is about 20986.2648653828. The cubic root of 440423313 is about 760.8343290051.

Adding to 440423313 its reverse (313324044), we get a palindrome (753747357).

The spelling of 440423313 in words is "four hundred forty million, four hundred twenty-three thousand, three hundred thirteen".