444530420 has 24 divisors (see below), whose sum is σ = 938917224. Its totient is φ = 176782976.

The previous prime is 444530417. The next prime is 444530423. The reversal of 444530420 is 24035444.

It is an interprime number because it is at equal distance from previous prime (444530417) and next prime (444530423).

It can be written as a sum of positive squares in 4 ways, for example, as 111978724 + 332551696 = 10582^2 + 18236^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 444530420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444530423) 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, 60779 + ... + 67698.

It is an arithmetic number, because the mean of its divisors is an integer number (39121551).

Almost surely, 2^444530420 is an apocalyptic number.

It is an amenable number.

444530420 is an abundant number, since it is smaller than the sum of its proper divisors (494386804).

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

444530420 is a wasteful number, since it uses less digits than its factorization.

444530420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128659 (or 128657 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 444530420 is about 21083.8900585257. The cubic root of 444530420 is about 763.1920339176.

Adding to 444530420 its reverse (24035444), we get a palindrome (468565864).

The spelling of 444530420 in words is "four hundred forty-four million, five hundred thirty thousand, four hundred twenty".