440134221 has 16 divisors (see below), whose sum is σ = 632802240. Its totient is φ = 271198080.

The previous prime is 440134217. The next prime is 440134231. The reversal of 440134221 is 122431044.

It is not a de Polignac number, because 440134221 - 2² = 440134217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440134231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 91830 + ... + 96503.

It is an arithmetic number, because the mean of its divisors is an integer number (39550140).

Almost surely, 2^440134221 is an apocalyptic number.

440134221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

440134221 is a deficient number, since it is larger than the sum of its proper divisors (192668019).

440134221 is a wasteful number, since it uses less digits than its factorization.

440134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188396.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 440134221 is about 20979.3760870051. The cubic root of 440134221 is about 760.6678230899.

Adding to 440134221 its reverse (122431044), we get a palindrome (562565265).

The spelling of 440134221 in words is "four hundred forty million, one hundred thirty-four thousand, two hundred twenty-one".