440856160901 has 4 divisors (see below), whose sum is σ = 474768173292. Its totient is φ = 406944148512.

The previous prime is 440856160897. The next prime is 440856160957. The reversal of 440856160901 is 109061658044.

It is a Cunningham number, because it is equal to 663970²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65215879876 + 375640281025 = 255374^2 + 612895^2 .

It is a cyclic number.

It is not a de Polignac number, because 440856160901 - 2² = 440856160897 is a prime.

It is a super-2 number, since 2×440856160901² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440856160961) 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 3 ways as a sum of consecutive naturals, for example, 16956006176 + ... + 16956006201.

It is an arithmetic number, because the mean of its divisors is an integer number (118692043323).

Almost surely, 2^440856160901 is an apocalyptic number.

It is an amenable number.

440856160901 is a deficient number, since it is larger than the sum of its proper divisors (33912012391).

440856160901 is a wasteful number, since it uses less digits than its factorization.

440856160901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33912012390.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 440856160901 in words is "four hundred forty billion, eight hundred fifty-six million, one hundred sixty thousand, nine hundred one".