108835989409 has 9 divisors (see below), whose sum is σ = 126607816947. Its totient is φ = 93286011504.

The previous prime is 108835989307. The next prime is 108835989413. The reversal of 108835989409 is 904989538801.

The square root of 108835989409 is 329903.

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., 41563809 + 108794425600 = 6447^2 + 329840^2 .

It is not a de Polignac number, because 108835989409 - 2¹⁹ = 108835465121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108835989419) 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, 2285757 + ... + 2332885.

Almost surely, 2^108835989409 is an apocalyptic number.

108835989409 is the 329903-rd square number.

108835989409 is the 164952-nd centered octagonal number.

It is an amenable number.

108835989409 is a deficient number, since it is larger than the sum of its proper divisors (17771827538).

108835989409 is an frugal number, since it uses more digits than its factorization.

108835989409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94272 (or 47136 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 64.

Multiplying 108835989409 by its sum of digits (64), we get a square (6965503322176 = 2639224²).

The spelling of 108835989409 in words is "one hundred eight billion, eight hundred thirty-five million, nine hundred eighty-nine thousand, four hundred nine".