440236440661 has 8 divisors (see below), whose sum is σ = 449154755640. Its totient is φ = 431340791232.

The previous prime is 440236440649. The next prime is 440236440671. The reversal of 440236440661 is 166044632044.

It can be written as a sum of positive squares in 4 ways, for example, as 343197960561 + 97038480100 = 585831^2 + 311510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440236440661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440236440641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5627146 + ... + 5704843.

It is an arithmetic number, because the mean of its divisors is an integer number (56144344455).

Almost surely, 2^440236440661 is an apocalyptic number.

It is an amenable number.

440236440661 is a deficient number, since it is larger than the sum of its proper divisors (8918314979).

440236440661 is a wasteful number, since it uses less digits than its factorization.

440236440661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11332775.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 440236440661 in words is "four hundred forty billion, two hundred thirty-six million, four hundred forty thousand, six hundred sixty-one".