440454870866 has 4 divisors (see below), whose sum is σ = 660682306302. Its totient is φ = 220227435432.

The previous prime is 440454870851. The next prime is 440454870883. The reversal of 440454870866 is 668078454044.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 439840872025 + 613998841 = 663205^2 + 24779^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110113717715 + ... + 110113717718.

Almost surely, 2^440454870866 is an apocalyptic number.

440454870866 is a deficient number, since it is larger than the sum of its proper divisors (220227435436).

440454870866 is a wasteful number, since it uses less digits than its factorization.

440454870866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220227435435.

The product of its (nonzero) digits is 20643840, while the sum is 56.

The spelling of 440454870866 in words is "four hundred forty billion, four hundred fifty-four million, eight hundred seventy thousand, eight hundred sixty-six".