445445221404 has 12 divisors (see below), whose sum is σ = 1039372183304. Its totient is φ = 148481740464.

The previous prime is 445445221399. The next prime is 445445221409. The reversal of 445445221404 is 404122544544.

It is an interprime number because it is at equal distance from previous prime (445445221399) and next prime (445445221409).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445445221409) 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, 18560217547 + ... + 18560217570.

Almost surely, 2^445445221404 is an apocalyptic number.

It is an amenable number.

445445221404 is an abundant number, since it is smaller than the sum of its proper divisors (593926961900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445445221404 is a wasteful number, since it uses less digits than its factorization.

445445221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37120435124 (or 37120435122 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 39.

Adding to 445445221404 its reverse (404122544544), we get a palindrome (849567765948).

The spelling of 445445221404 in words is "four hundred forty-five billion, four hundred forty-five million, two hundred twenty-one thousand, four hundred four".