8409903615 has 12 divisors (see below), whose sum is σ = 14577166344. Its totient is φ = 4485281904.

The previous prime is 8409903599. The next prime is 8409903617. The reversal of 8409903615 is 5163099048.

It is a happy number.

It is not a de Polignac number, because 8409903615 - 2⁴ = 8409903599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 186886747 = 8409903615 / (8 + 4 + 0 + 9 + 9 + 0 + 3 + 6 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8409903617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93443329 + ... + 93443418.

It is an arithmetic number, because the mean of its divisors is an integer number (1214763862).

Almost surely, 2^8409903615 is an apocalyptic number.

8409903615 is a deficient number, since it is larger than the sum of its proper divisors (6167262729).

8409903615 is a wasteful number, since it uses less digits than its factorization.

8409903615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186886758 (or 186886755 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 8409903615 is about 91705.5266328044. The cubic root of 8409903615 is about 2033.5912886179.

The spelling of 8409903615 in words is "eight billion, four hundred nine million, nine hundred three thousand, six hundred fifteen".