440432121 has 16 divisors (see below), whose sum is σ = 592848000. Its totient is φ = 290828928.

The previous prime is 440432093. The next prime is 440432123. The reversal of 440432121 is 121234044.

It is not a de Polignac number, because 440432121 - 2⁷ = 440431993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440432123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245295 + ... + 247083.

It is an arithmetic number, because the mean of its divisors is an integer number (37053000).

Almost surely, 2^440432121 is an apocalyptic number.

It is an amenable number.

440432121 is a deficient number, since it is larger than the sum of its proper divisors (152415879).

440432121 is a wasteful number, since it uses less digits than its factorization.

440432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528.

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

The square root of 440432121 is about 20986.4747158736. The cubic root of 440432121 is about 760.8394009317.

Adding to 440432121 its reverse (121234044), we get a palindrome (561666165).

It can be divided in two parts, 44043 and 2121, that added together give a palindrome (46164).

The spelling of 440432121 in words is "four hundred forty million, four hundred thirty-two thousand, one hundred twenty-one".