440313321 has 16 divisors (see below), whose sum is σ = 674365824. Its totient is φ = 250328064.

The previous prime is 440313319. The next prime is 440313337. The reversal of 440313321 is 123313044.

It is not a de Polignac number, because 440313321 - 2¹ = 440313319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (440313301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49080 + ... + 57353.

It is an arithmetic number, because the mean of its divisors is an integer number (42147864).

Almost surely, 2^440313321 is an apocalyptic number.

It is an amenable number.

440313321 is a deficient number, since it is larger than the sum of its proper divisors (234052503).

440313321 is a wasteful number, since it uses less digits than its factorization.

440313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106640.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 440313321 is about 20983.6441306080. The cubic root of 440313321 is about 760.7709864173.

Adding to 440313321 its reverse (123313044), we get a palindrome (563626365).

The spelling of 440313321 in words is "four hundred forty million, three hundred thirteen thousand, three hundred twenty-one".