440453886889 has 9 divisors (see below), whose sum is σ = 451486575511. Its totient is φ = 429684562480.

The previous prime is 440453886877. The next prime is 440453886893. The reversal of 440453886889 is 988688354044.

The square root of 440453886889 is 663667.

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

It can be written as a sum of positive squares in only one way, i.e., 21223536489 + 419230350400 = 145683^2 + 647480^2 .

It is not a de Polignac number, because 440453886889 - 2²³ = 440445498281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440453886809) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27202254 + ... + 27218440.

Almost surely, 2^440453886889 is an apocalyptic number.

440453886889 is the 663667-th square number.

440453886889 is the 331834-th centered octagonal number.

It is an amenable number.

440453886889 is a deficient number, since it is larger than the sum of its proper divisors (11032688622).

440453886889 is an frugal number, since it uses more digits than its factorization.

440453886889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32456 (or 16228 counting only the distinct ones).

The product of its (nonzero) digits is 212336640, while the sum is 67.

The spelling of 440453886889 in words is "four hundred forty billion, four hundred fifty-three million, eight hundred eighty-six thousand, eight hundred eighty-nine".