440142705 has 24 divisors (see below), whose sum is σ = 763843392. Its totient is φ = 234456864.

The previous prime is 440142701. The next prime is 440142721. The reversal of 440142705 is 507241044.

It is not a de Polignac number, because 440142705 - 2² = 440142701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440142701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34402 + ... + 45428.

It is an arithmetic number, because the mean of its divisors is an integer number (31826808).

Almost surely, 2^440142705 is an apocalyptic number.

440142705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440142705 is a deficient number, since it is larger than the sum of its proper divisors (323700687).

440142705 is a wasteful number, since it uses less digits than its factorization.

440142705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11925 (or 11922 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 440142705 is about 20979.5782846081. The cubic root of 440142705 is about 760.6727105872.

Adding to 440142705 its reverse (507241044), we get a palindrome (947383749).

The spelling of 440142705 in words is "four hundred forty million, one hundred forty-two thousand, seven hundred five".