2104508409 has 16 divisors (see below), whose sum is σ = 2842039872. Its totient is φ = 1385018048.

The previous prime is 2104508389. The next prime is 2104508423. The reversal of 2104508409 is 9048054012.

It is a cyclic number.

It is not a de Polignac number, because 2104508409 - 2⁷ = 2104508281 is a prime.

It is a super-2 number, since 2×2104508409² = 8857911287103422562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2104508409.

It is not an unprimeable number, because it can be changed into a prime (2104508429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429079 + ... + 433955.

It is an arithmetic number, because the mean of its divisors is an integer number (177627492).

Almost surely, 2^2104508409 is an apocalyptic number.

It is an amenable number.

2104508409 is a deficient number, since it is larger than the sum of its proper divisors (737531463).

2104508409 is a wasteful number, since it uses less digits than its factorization.

2104508409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6696.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2104508409 is about 45874.9213514312. The cubic root of 2104508409 is about 1281.4949186396.

The spelling of 2104508409 in words is "two billion, one hundred four million, five hundred eight thousand, four hundred nine".