444020403 has 8 divisors (see below), whose sum is σ = 601732816. Its totient is φ = 291160800.

The previous prime is 444020389. The next prime is 444020407. The reversal of 444020403 is 304020444.

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

It is not a de Polignac number, because 444020403 - 2²² = 439826099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444020403.

It is not an unprimeable number, because it can be changed into a prime (444020407) 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, 1212988 + ... + 1213353.

It is an arithmetic number, because the mean of its divisors is an integer number (75216602).

Almost surely, 2^444020403 is an apocalyptic number.

444020403 is a deficient number, since it is larger than the sum of its proper divisors (157712413).

444020403 is a wasteful number, since it uses less digits than its factorization.

444020403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426405.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 444020403 is about 21071.7916419084. The cubic root of 444020403 is about 762.9000480004.

Adding to 444020403 its reverse (304020444), we get a palindrome (748040847).

The spelling of 444020403 in words is "four hundred forty-four million, twenty thousand, four hundred three".