40448880085 has 4 divisors (see below), whose sum is σ = 48538656108. Its totient is φ = 32359104064.

The previous prime is 40448880077. The next prime is 40448880089. The reversal of 40448880085 is 58008884404.

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 2 ways, for example, as 15875496004 + 24573384081 = 125998^2 + 156759^2 .

It is a cyclic number.

It is not a de Polignac number, because 40448880085 - 2³ = 40448880077 is a prime.

It is a super-2 number, since 2×40448880085² (a number of 22 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 (40448880089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4044888004 + ... + 4044888013.

It is an arithmetic number, because the mean of its divisors is an integer number (12134664027).

Almost surely, 2^40448880085 is an apocalyptic number.

It is an amenable number.

40448880085 is a deficient number, since it is larger than the sum of its proper divisors (8089776023).

40448880085 is an equidigital number, since it uses as much as digits as its factorization.

40448880085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8089776022.

The product of its (nonzero) digits is 1310720, while the sum is 49.

The spelling of 40448880085 in words is "forty billion, four hundred forty-eight million, eight hundred eighty thousand, eighty-five".