108289729 has 4 divisors (see below), whose sum is σ = 108349780. Its totient is φ = 108229680.

The previous prime is 108289723. The next prime is 108289747. The reversal of 108289729 is 927982801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3186225 + 105103504 = 1785^2 + 10252^2 .

It is a cyclic number.

It is not a de Polignac number, because 108289729 - 2¹⁷ = 108158657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108289723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27234 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (27087445).

Almost surely, 2^108289729 is an apocalyptic number.

It is an amenable number.

108289729 is a deficient number, since it is larger than the sum of its proper divisors (60051).

108289729 is an equidigital number, since it uses as much as digits as its factorization.

108289729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60050.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 108289729 is about 10406.2351020914. The cubic root of 108289729 is about 476.6457836114.

The spelling of 108289729 in words is "one hundred eight million, two hundred eighty-nine thousand, seven hundred twenty-nine".