109208438089 has 9 divisors (see below), whose sum is σ = 115265394183. Its totient is φ = 103454677152.

The previous prime is 109208438063. The next prime is 109208438113. The reversal of 109208438089 is 980834802901.

The square root of 109208438089 is 330467.

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., 23949110025 + 85259328064 = 154755^2 + 291992^2 .

It is not a de Polignac number, because 109208438089 - 2⁹ = 109208437577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109308438089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6270177 + ... + 6287569.

Almost surely, 2^109208438089 is an apocalyptic number.

109208438089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

109208438089 is the 330467-th square number.

109208438089 is the 165234-th centered octagonal number.

It is an amenable number.

109208438089 is a deficient number, since it is larger than the sum of its proper divisors (6056956094).

109208438089 is an frugal number, since it uses more digits than its factorization.

109208438089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34824 (or 17412 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 109208438089 in words is "one hundred nine billion, two hundred eight million, four hundred thirty-eight thousand, eighty-nine".