441432121 has 4 divisors (see below), whose sum is σ = 475388452. Its totient is φ = 407475792.

The previous prime is 441432107. The next prime is 441432137. The reversal of 441432121 is 121234144.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32947600 + 408484521 = 5740^2 + 20211^2 .

It is a cyclic number.

It is not a de Polignac number, because 441432121 - 2⁷ = 441431993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441432092 and 441432101.

It is not an unprimeable number, because it can be changed into a prime (441432151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16978146 + ... + 16978171.

It is an arithmetic number, because the mean of its divisors is an integer number (118847113).

Almost surely, 2^441432121 is an apocalyptic number.

It is an amenable number.

441432121 is a deficient number, since it is larger than the sum of its proper divisors (33956331).

441432121 is a wasteful number, since it uses less digits than its factorization.

441432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33956330.

The product of its digits is 768, while the sum is 22.

The square root of 441432121 is about 21010.2860761104. The cubic root of 441432121 is about 761.4147936441.

Adding to 441432121 its reverse (121234144), we get a palindrome (562666265).

It can be divided in two parts, 44143 and 2121, that added together give a palindrome (46264).

The spelling of 441432121 in words is "four hundred forty-one million, four hundred thirty-two thousand, one hundred twenty-one".