440043962891 has 16 divisors (see below), whose sum is σ = 475506883488. Its totient is φ = 404813376000.

The previous prime is 440043962857. The next prime is 440043962947. The reversal of 440043962891 is 198269340044.

It is a cyclic number.

It is not a de Polignac number, because 440043962891 - 2¹⁰ = 440043961867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440043962801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5785136 + ... + 5860706.

It is an arithmetic number, because the mean of its divisors is an integer number (29719180218).

Almost surely, 2^440043962891 is an apocalyptic number.

440043962891 is a deficient number, since it is larger than the sum of its proper divisors (35462920597).

440043962891 is a wasteful number, since it uses less digits than its factorization.

440043962891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77102.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 440043962891 in words is "four hundred forty billion, forty-three million, nine hundred sixty-two thousand, eight hundred ninety-one".