440141645 has 8 divisors (see below), whose sum is σ = 559238904. Its totient is φ = 331400704.

The previous prime is 440141641. The next prime is 440141719. The reversal of 440141645 is 546141044.

It can be written as a sum of positive squares in 4 ways, for example, as 209496676 + 230644969 = 14474^2 + 15187^2 .

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 440141645 - 2² = 440141641 is a prime.

It is a super-3 number, since 3×440141645³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440141641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2588984 + ... + 2589153.

It is an arithmetic number, because the mean of its divisors is an integer number (69904863).

Almost surely, 2^440141645 is an apocalyptic number.

It is an amenable number.

440141645 is a deficient number, since it is larger than the sum of its proper divisors (119097259).

440141645 is a wasteful number, since it uses less digits than its factorization.

440141645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178159.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 440141645 is about 20979.5530219307. The cubic root of 440141645 is about 760.6720999415.

Adding to 440141645 its reverse (546141044), we get a palindrome (986282689).

The spelling of 440141645 in words is "four hundred forty million, one hundred forty-one thousand, six hundred forty-five".