440841232989 has 12 divisors (see below), whose sum is σ = 648785211516. Its totient is φ = 288348982272.

The previous prime is 440841232987. The next prime is 440841233011. The reversal of 440841232989 is 989232148044.

It is a happy number.

440841232989 is a `hidden beast` number, since 440 + 84 + 1 + 2 + 32 + 98 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 224306432100 + 216534800889 = 473610^2 + 465333^2 .

It is not a de Polignac number, because 440841232989 - 2¹ = 440841232987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440841232987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462097252 + ... + 462098205.

It is an arithmetic number, because the mean of its divisors is an integer number (54065434293).

Almost surely, 2^440841232989 is an apocalyptic number.

It is an amenable number.

440841232989 is a deficient number, since it is larger than the sum of its proper divisors (207943978527).

440841232989 is a wasteful number, since it uses less digits than its factorization.

440841232989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924195516 (or 924195513 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 440841232989 in words is "four hundred forty billion, eight hundred forty-one million, two hundred thirty-two thousand, nine hundred eighty-nine".