8440398794075 has 6 divisors (see below), whose sum is σ = 10466094504684. Its totient is φ = 6752319035240.

The previous prime is 8440398794041. The next prime is 8440398794129. The reversal of 8440398794075 is 5704978930448.

It is not a de Polignac number, because 8440398794075 - 2²⁰ = 8440397745499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8440398793996 and 8440398794014.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168807975857 + ... + 168807975906.

It is an arithmetic number, because the mean of its divisors is an integer number (1744349084114).

Almost surely, 2^{8440398794075} is an apocalyptic number.

8440398794075 is a deficient number, since it is larger than the sum of its proper divisors (2025695710609).

8440398794075 is a wasteful number, since it uses less digits than its factorization.

8440398794075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337615951773 (or 337615951768 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 68.

The spelling of 8440398794075 in words is "eight trillion, four hundred forty billion, three hundred ninety-eight million, seven hundred ninety-four thousand, seventy-five".