440321045 has 4 divisors (see below), whose sum is σ = 528385260. Its totient is φ = 352256832.

The previous prime is 440321041. The next prime is 440321047. The reversal of 440321045 is 540123044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71757841 + 368563204 = 8471^2 + 19198^2 .

It is a cyclic number.

It is not a de Polignac number, because 440321045 - 2² = 440321041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440321045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440321041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44032100 + ... + 44032109.

It is an arithmetic number, because the mean of its divisors is an integer number (132096315).

Almost surely, 2^440321045 is an apocalyptic number.

It is an amenable number.

440321045 is a deficient number, since it is larger than the sum of its proper divisors (88064215).

440321045 is an equidigital number, since it uses as much as digits as its factorization.

440321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88064214.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 440321045 is about 20983.8281779088. The cubic root of 440321045 is about 760.7754348865.

Adding to 440321045 its reverse (540123044), we get a palindrome (980444089).

The spelling of 440321045 in words is "four hundred forty million, three hundred twenty-one thousand, forty-five".