808400840393 has 8 divisors (see below), whose sum is σ = 810962267712. Its totient is φ = 805840745616.

The previous prime is 808400840389. The next prime is 808400840413. The reversal of 808400840393 is 393048004808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 808400840393 - 2² = 808400840389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808400840323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889196 + ... + 1551602.

It is an arithmetic number, because the mean of its divisors is an integer number (101370283464).

Almost surely, 2^808400840393 is an apocalyptic number.

It is an amenable number.

808400840393 is a deficient number, since it is larger than the sum of its proper divisors (2561427319).

808400840393 is a wasteful number, since it uses less digits than its factorization.

808400840393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666271.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 808400840393 in words is "eight hundred eight billion, four hundred million, eight hundred forty thousand, three hundred ninety-three".