8821660349 has 8 divisors (see below), whose sum is σ = 9342034560. Its totient is φ = 8301447616.

The previous prime is 8821660343. The next prime is 8821660357. The reversal of 8821660349 is 9430661288.

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

It is not a de Polignac number, because 8821660349 - 2⁴ = 8821660333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8821660343) 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, 82892 + ... + 156570.

It is an arithmetic number, because the mean of its divisors is an integer number (1167754320).

Almost surely, 2^8821660349 is an apocalyptic number.

It is an amenable number.

8821660349 is a deficient number, since it is larger than the sum of its proper divisors (520374211).

8821660349 is a wasteful number, since it uses less digits than its factorization.

8821660349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80739.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 8821660349 is about 93923.6942895668. The cubic root of 8821660349 is about 2066.2527481342.

The spelling of 8821660349 in words is "eight billion, eight hundred twenty-one million, six hundred sixty thousand, three hundred forty-nine".