108785849929 has 9 divisors (see below), whose sum is σ = 110618918631. Its totient is φ = 106982685720.

The previous prime is 108785849927. The next prime is 108785849983. The reversal of 108785849929 is 929948587801.

The square root of 108785849929 is 329827.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3537513529 + 105248336400 = 59477^2 + 324420^2 .

It is not a de Polignac number, because 108785849929 - 2¹ = 108785849927 is a prime.

It is a super-2 number, since 2×108785849929² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108785849927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20116744 + ... + 20122150.

It is an arithmetic number, because the mean of its divisors is an integer number (12290990959).

Almost surely, 2^108785849929 is an apocalyptic number.

108785849929 is the 329827-th square number.

108785849929 is the 164914-th centered octagonal number.

It is an amenable number.

108785849929 is a deficient number, since it is larger than the sum of its proper divisors (1833068702).

108785849929 is an frugal number, since it uses more digits than its factorization.

108785849929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936 (or 5468 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 70.

The spelling of 108785849929 in words is "one hundred eight billion, seven hundred eighty-five million, eight hundred forty-nine thousand, nine hundred twenty-nine".