108539887 has 2 divisors, whose sum is σ = 108539888. Its totient is φ = 108539886.

The previous prime is 108539867. The next prime is 108539891. The reversal of 108539887 is 788935801.

It is a strong prime.

It is an emirp because it is prime and its reverse (788935801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108539887 - 2¹⁹ = 108015599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108539887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108539867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54269943 + 54269944.

It is an arithmetic number, because the mean of its divisors is an integer number (54269944).

Almost surely, 2^108539887 is an apocalyptic number.

108539887 is a deficient number, since it is larger than the sum of its proper divisors (1).

108539887 is an equidigital number, since it uses as much as digits as its factorization.

108539887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 108539887 is about 10418.2477893358. The cubic root of 108539887 is about 477.0125314067.

The spelling of 108539887 in words is "one hundred eight million, five hundred thirty-nine thousand, eight hundred eighty-seven".