129348587 has 2 divisors, whose sum is σ = 129348588. Its totient is φ = 129348586.

The previous prime is 129348553. The next prime is 129348623. The reversal of 129348587 is 785843921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129348587 - 2¹⁸ = 129086443 is a prime.

It is not a weakly prime, because it can be changed into another prime (129348547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64674293 + 64674294.

It is an arithmetic number, because the mean of its divisors is an integer number (64674294).

Almost surely, 2^129348587 is an apocalyptic number.

129348587 is a deficient number, since it is larger than the sum of its proper divisors (1).

129348587 is an equidigital number, since it uses as much as digits as its factorization.

129348587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 129348587 is about 11373.1520257139. The cubic root of 129348587 is about 505.7321497917.

The spelling of 129348587 in words is "one hundred twenty-nine million, three hundred forty-eight thousand, five hundred eighty-seven".