444121403 has 4 divisors (see below), whose sum is σ = 484496088. Its totient is φ = 403746720.

The previous prime is 444121367. The next prime is 444121417. The reversal of 444121403 is 304121444.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 444121403 - 2¹⁰ = 444120379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444121423) 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, 20187326 + ... + 20187347.

It is an arithmetic number, because the mean of its divisors is an integer number (121124022).

Almost surely, 2^444121403 is an apocalyptic number.

444121403 is a deficient number, since it is larger than the sum of its proper divisors (40374685).

444121403 is a wasteful number, since it uses less digits than its factorization.

444121403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40374684.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 444121403 is about 21074.1880745143. The cubic root of 444121403 is about 762.9578884830.

Adding to 444121403 its reverse (304121444), we get a palindrome (748242847).

The spelling of 444121403 in words is "four hundred forty-four million, one hundred twenty-one thousand, four hundred three".