808993669 has 8 divisors (see below), whose sum is σ = 882812160. Its totient is φ = 735220800.

The previous prime is 808993649. The next prime is 808993681. The reversal of 808993669 is 966399808.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808993669 is a prime.

It is a super-2 number, since 2×808993669² = 1308941512964163122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808993649) 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 7 ways as a sum of consecutive naturals, for example, 33324 + ... + 52234.

It is an arithmetic number, because the mean of its divisors is an integer number (110351520).

Almost surely, 2^808993669 is an apocalyptic number.

It is an amenable number.

808993669 is a deficient number, since it is larger than the sum of its proper divisors (73818491).

808993669 is a wasteful number, since it uses less digits than its factorization.

808993669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22811.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 808993669 is about 28442.8140133848. The cubic root of 808993669 is about 931.7835542271.

The spelling of 808993669 in words is "eight hundred eight million, nine hundred ninety-three thousand, six hundred sixty-nine".