808993386 has 64 divisors (see below), whose sum is σ = 1861090560. Its totient is φ = 260305920.

The previous prime is 808993369. The next prime is 808993387. The reversal of 808993386 is 683399808.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (808993387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212875 + ... + 216641.

It is an arithmetic number, because the mean of its divisors is an integer number (29079540).

Almost surely, 2^808993386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808993386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930545280).

808993386 is an abundant number, since it is smaller than the sum of its proper divisors (1052097174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808993386 is a wasteful number, since it uses less digits than its factorization.

808993386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916 (or 3910 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 808993386 is about 28442.8090384899. The cubic root of 808993386 is about 931.7834455758.

It can be divided in two parts, 8089 and 93386, that added together give a triangular number (101475 = T₄₅₀).

The spelling of 808993386 in words is "eight hundred eight million, nine hundred ninety-three thousand, three hundred eighty-six".