440221138 has 8 divisors (see below), whose sum is σ = 754664832. Its totient is φ = 188666196.

The previous prime is 440221123. The next prime is 440221139. The reversal of 440221138 is 831122044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (440221139) 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 3 ways as a sum of consecutive naturals, for example, 15722170 + ... + 15722197.

It is an arithmetic number, because the mean of its divisors is an integer number (94333104).

Almost surely, 2^440221138 is an apocalyptic number.

440221138 is a deficient number, since it is larger than the sum of its proper divisors (314443694).

440221138 is a wasteful number, since it uses less digits than its factorization.

440221138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31444376.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 440221138 is about 20981.4474715164. The cubic root of 440221138 is about 760.7178916148.

The spelling of 440221138 in words is "four hundred forty million, two hundred twenty-one thousand, one hundred thirty-eight".