6798398409 has 24 divisors (see below), whose sum is σ = 10738884000. Its totient is φ = 4110143040.

The previous prime is 6798398381. The next prime is 6798398479. The reversal of 6798398409 is 9048938976.

6798398409 is a `hidden beast` number, since 67 + 9 + 83 + 98 + 409 = 666.

It is not a de Polignac number, because 6798398409 - 2⁵ = 6798398377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6798398479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43459 + ... + 124440.

It is an arithmetic number, because the mean of its divisors is an integer number (447453500).

Almost surely, 2^6798398409 is an apocalyptic number.

It is an amenable number.

6798398409 is a deficient number, since it is larger than the sum of its proper divisors (3940485591).

6798398409 is a wasteful number, since it uses less digits than its factorization.

6798398409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168325 (or 168322 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The square root of 6798398409 is about 82452.4008686224. The cubic root of 6798398409 is about 1894.3877238416.

The spelling of 6798398409 in words is "six billion, seven hundred ninety-eight million, three hundred ninety-eight thousand, four hundred nine".