444140453 has 4 divisors (see below), whose sum is σ = 470266380. Its totient is φ = 418014528.

The previous prime is 444140443. The next prime is 444140467. The reversal of 444140453 is 354041444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133217764 + 310922689 = 11542^2 + 17633^2 .

It is a cyclic number.

It is not a de Polignac number, because 444140453 - 2²² = 439946149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444140443) 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, 13062938 + ... + 13062971.

It is an arithmetic number, because the mean of its divisors is an integer number (117566595).

Almost surely, 2^444140453 is an apocalyptic number.

It is an amenable number.

444140453 is a deficient number, since it is larger than the sum of its proper divisors (26125927).

444140453 is a wasteful number, since it uses less digits than its factorization.

444140453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26125926.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 444140453 is about 21074.6400443756. The cubic root of 444140453 is about 762.9687970168.

Adding to 444140453 its reverse (354041444), we get a palindrome (798181897).

Subtracting from 444140453 its reverse (354041444), we obtain a palindrome (90099009).

The spelling of 444140453 in words is "four hundred forty-four million, one hundred forty thousand, four hundred fifty-three".