440445313 has 16 divisors (see below), whose sum is σ = 549892224. Its totient is φ = 342725760.

The previous prime is 440445263. The next prime is 440445323. The reversal of 440445313 is 313544044.

It is a cyclic number.

It is not a de Polignac number, because 440445313 - 2²¹ = 438348161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440445323) 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, 57781 + ... + 64957.

It is an arithmetic number, because the mean of its divisors is an integer number (34368264).

Almost surely, 2^440445313 is an apocalyptic number.

It is an amenable number.

440445313 is a deficient number, since it is larger than the sum of its proper divisors (109446911).

440445313 is a wasteful number, since it uses less digits than its factorization.

440445313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 440445313 is about 20986.7890111851. The cubic root of 440445313 is about 760.8469971784.

Adding to 440445313 its reverse (313544044), we get a palindrome (753989357).

The spelling of 440445313 in words is "four hundred forty million, four hundred forty-five thousand, three hundred thirteen".