441621111 has 4 divisors (see below), whose sum is σ = 588828152. Its totient is φ = 294414072.

The previous prime is 441621109. The next prime is 441621119. The reversal of 441621111 is 111126144.

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

It is not a de Polignac number, because 441621111 - 2¹ = 441621109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441621119) 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, 73603516 + ... + 73603521.

It is an arithmetic number, because the mean of its divisors is an integer number (147207038).

Almost surely, 2^441621111 is an apocalyptic number.

441621111 is a deficient number, since it is larger than the sum of its proper divisors (147207041).

441621111 is a wasteful number, since it uses less digits than its factorization.

441621111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147207040.

The product of its digits is 192, while the sum is 21.

The square root of 441621111 is about 21014.7831537706. The cubic root of 441621111 is about 761.5234394539.

Adding to 441621111 its reverse (111126144), we get a palindrome (552747255).

The spelling of 441621111 in words is "four hundred forty-one million, six hundred twenty-one thousand, one hundred eleven".