129887 has 2 divisors, whose sum is σ = 129888. Its totient is φ = 129886.

The previous prime is 129853. The next prime is 129893. The reversal of 129887 is 788921.

It is a happy number.

129887 is nontrivially palindromic in base 13.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129887 - 2⁸ = 129631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64943 + 64944.

It is an arithmetic number, because the mean of its divisors is an integer number (64944).

2¹²⁹⁸⁸⁷ is an apocalyptic number.

129887 is a deficient number, since it is larger than the sum of its proper divisors (1).

129887 is an equidigital number, since it uses as much as digits as its factorization.

129887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 129887 is about 360.3983906734. The cubic root of 129887 is about 50.6432881140.

The spelling of 129887 in words is "one hundred twenty-nine thousand, eight hundred eighty-seven".