108491329 has 2 divisors, whose sum is σ = 108491330. Its totient is φ = 108491328.

The previous prime is 108491321. The next prime is 108491353. The reversal of 108491329 is 923194801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89586225 + 18905104 = 9465^2 + 4348^2 .

It is a cyclic number.

It is not a de Polignac number, because 108491329 - 2³ = 108491321 is a prime.

It is not a weakly prime, because it can be changed into another prime (108491321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54245664 + 54245665.

It is an arithmetic number, because the mean of its divisors is an integer number (54245665).

Almost surely, 2^108491329 is an apocalyptic number.

It is an amenable number.

108491329 is a deficient number, since it is larger than the sum of its proper divisors (1).

108491329 is an equidigital number, since it uses as much as digits as its factorization.

108491329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 108491329 is about 10415.9170983644. The cubic root of 108491329 is about 476.9413863492.

The spelling of 108491329 in words is "one hundred eight million, four hundred ninety-one thousand, three hundred twenty-nine".