6409209506 has 16 divisors (see below), whose sum is σ = 11211446400. Its totient is φ = 2746803780.

The previous prime is 6409209479. The next prime is 6409209511. The reversal of 6409209506 is 6059029046.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670750 + ... + 4672121.

It is an arithmetic number, because the mean of its divisors is an integer number (700715400).

Almost surely, 2^6409209506 is an apocalyptic number.

6409209506 is a deficient number, since it is larger than the sum of its proper divisors (4802236894).

6409209506 is an equidigital number, since it uses as much as digits as its factorization.

6409209506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342894 (or 9342880 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 6409209506 is about 80057.5387205977. The cubic root of 6409209506 is about 1857.5256637079.

The spelling of 6409209506 in words is "six billion, four hundred nine million, two hundred nine thousand, five hundred six".