444421002 has 16 divisors (see below), whose sum is σ = 907754112. Its totient is φ = 144988320.

The previous prime is 444420989. The next prime is 444421009. The reversal of 444421002 is 200124444.

It is a super-3 number, since 3×444421002³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444421002.

It is not an unprimeable number, because it can be changed into a prime (444421009) 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, 787699 + ... + 788262.

It is an arithmetic number, because the mean of its divisors is an integer number (56734632).

Almost surely, 2^444421002 is an apocalyptic number.

444421002 is an abundant number, since it is smaller than the sum of its proper divisors (463333110).

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

444421002 is a wasteful number, since it uses less digits than its factorization.

444421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576013.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 444421002 is about 21081.2950740698. The cubic root of 444421002 is about 763.1294106830.

Adding to 444421002 its reverse (200124444), we get a palindrome (644545446).

The spelling of 444421002 in words is "four hundred forty-four million, four hundred twenty-one thousand, two".