108857929 has 2 divisors, whose sum is σ = 108857930. Its totient is φ = 108857928.

The previous prime is 108857921. The next prime is 108857933. The reversal of 108857929 is 929758801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64834704 + 44023225 = 8052^2 + 6635^2 .

It is an emirp because it is prime and its reverse (929758801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108857929 - 2³ = 108857921 is a prime.

It is not a weakly prime, because it can be changed into another prime (108857921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54428964 + 54428965.

It is an arithmetic number, because the mean of its divisors is an integer number (54428965).

Almost surely, 2^108857929 is an apocalyptic number.

It is an amenable number.

108857929 is a deficient number, since it is larger than the sum of its proper divisors (1).

108857929 is an equidigital number, since it uses as much as digits as its factorization.

108857929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 108857929 is about 10433.5003234773. The cubic root of 108857929 is about 477.4779888066.

The spelling of 108857929 in words is "one hundred eight million, eight hundred fifty-seven thousand, nine hundred twenty-nine".