444545140 has 24 divisors (see below), whose sum is σ = 1005356520. Its totient is φ = 164139648.

The previous prime is 444545131. The next prime is 444545141. The reversal of 444545140 is 41545444.

It can be written as a sum of positive squares in 4 ways, for example, as 47499664 + 397045476 = 6892^2 + 19926^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444545141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854635 + ... + 855154.

It is an arithmetic number, because the mean of its divisors is an integer number (41889855).

Almost surely, 2^444545140 is an apocalyptic number.

It is an amenable number.

444545140 is an abundant number, since it is smaller than the sum of its proper divisors (560811380).

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

444545140 is a wasteful number, since it uses less digits than its factorization.

444545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709811 (or 1709809 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 444545140 is about 21084.2391373272. The cubic root of 444545140 is about 763.2004578351.

It can be divided in two parts, 44454 and 5140, that added together give a palindrome (49594).

The spelling of 444545140 in words is "four hundred forty-four million, five hundred forty-five thousand, one hundred forty".