2104407985 has 24 divisors (see below), whose sum is σ = 2822012136. Its totient is φ = 1501079040.

The previous prime is 2104407971. The next prime is 2104408001. The reversal of 2104407985 is 5897044012.

It can be written as a sum of positive squares in 4 ways, for example, as 214593201 + 1889814784 = 14649^2 + 43472^2 .

It is not a de Polignac number, because 2104407985 - 2⁷ = 2104407857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3606 + ... + 64975.

It is an arithmetic number, because the mean of its divisors is an integer number (117583839).

Almost surely, 2^2104407985 is an apocalyptic number.

It is an amenable number.

2104407985 is a deficient number, since it is larger than the sum of its proper divisors (717604151).

2104407985 is a wasteful number, since it uses less digits than its factorization.

2104407985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68641 (or 68622 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2104407985 is about 45873.8267969874. The cubic root of 2104407985 is about 1281.4745346405.

The spelling of 2104407985 in words is "two billion, one hundred four million, four hundred seven thousand, nine hundred eighty-five".