440404505 has 8 divisors (see below), whose sum is σ = 533162952. Its totient is φ = 349205248.

The previous prime is 440404501. The next prime is 440404513. The reversal of 440404505 is 505404044.

It can be written as a sum of positive squares in 4 ways, for example, as 7639696 + 432764809 = 2764^2 + 20803^2 .

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 440404505 - 2² = 440404501 is a prime.

It is a super-2 number, since 2×440404505² = 387912256048590050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440404501) 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, 389174 + ... + 390303.

It is an arithmetic number, because the mean of its divisors is an integer number (66645369).

Almost surely, 2^440404505 is an apocalyptic number.

It is an amenable number.

440404505 is a deficient number, since it is larger than the sum of its proper divisors (92758447).

440404505 is a wasteful number, since it uses less digits than its factorization.

440404505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779595.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 440404505 is about 20985.8167579916. The cubic root of 440404505 is about 760.8234985341.

Adding to 440404505 its reverse (505404044), we get a palindrome (945808549).

The spelling of 440404505 in words is "four hundred forty million, four hundred four thousand, five hundred five".