440753915449 has 3 divisors (see below), whose sum is σ = 440754579343. Its totient is φ = 440753251556.

The previous prime is 440753915369. The next prime is 440753915467. The reversal of 440753915449 is 944519357044.

The square root of 440753915449 is 663893.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 94694675625 + 346059239824 = 307725^2 + 588268^2 .

It is not a de Polignac number, because 440753915449 - 2²⁹ = 440217044537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440753915449.

It is not an unprimeable number, because it can be changed into a prime (440753913449) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 331947 + ... + 995839.

Almost surely, 2^440753915449 is an apocalyptic number.

440753915449 is the 663893-rd square number.

440753915449 is the 331947-th centered octagonal number.

It is an amenable number.

440753915449 is a deficient number, since it is larger than the sum of its proper divisors (663894).

440753915449 is an frugal number, since it uses more digits than its factorization.

440753915449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327786 (or 663893 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 440753915449 in words is "four hundred forty billion, seven hundred fifty-three million, nine hundred fifteen thousand, four hundred forty-nine".