440135121 has 8 divisors (see below), whose sum is σ = 587248480. Its totient is φ = 293222592.

The previous prime is 440135089. The next prime is 440135141. The reversal of 440135121 is 121531044.

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

It is not a de Polignac number, because 440135121 - 2⁵ = 440135089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440135141) 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, 45016 + ... + 53913.

It is an arithmetic number, because the mean of its divisors is an integer number (73406060).

Almost surely, 2^440135121 is an apocalyptic number.

It is an amenable number.

440135121 is a deficient number, since it is larger than the sum of its proper divisors (147113359).

440135121 is a wasteful number, since it uses less digits than its factorization.

440135121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100415.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 440135121 is about 20979.3975366310. The cubic root of 440135121 is about 760.6683415686.

Adding to 440135121 its reverse (121531044), we get a palindrome (561666165).

The spelling of 440135121 in words is "four hundred forty million, one hundred thirty-five thousand, one hundred twenty-one".