440131345 has 8 divisors (see below), whose sum is σ = 538123176. Its totient is φ = 345461376.

The previous prime is 440131337. The next prime is 440131361. The reversal of 440131345 is 543131044.

It can be written as a sum of positive squares in 4 ways, for example, as 10647169 + 429484176 = 3263^2 + 20724^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 440131345 - 2³ = 440131337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 830172 + ... + 830701.

It is an arithmetic number, because the mean of its divisors is an integer number (67265397).

Almost surely, 2^440131345 is an apocalyptic number.

It is an amenable number.

440131345 is a deficient number, since it is larger than the sum of its proper divisors (97991831).

440131345 is a wasteful number, since it uses less digits than its factorization.

440131345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660931.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 440131345 is about 20979.3075433867. The cubic root of 440131345 is about 760.6661662579. Note that the first 3 decimals are identical.

Adding to 440131345 its reverse (543131044), we get a palindrome (983262389).

The spelling of 440131345 in words is "four hundred forty million, one hundred thirty-one thousand, three hundred forty-five".