129098487 has 12 divisors (see below), whose sum is σ = 200234616. Its totient is φ = 73770480.

The previous prime is 129098467. The next prime is 129098531. The reversal of 129098487 is 784890921.

It is not a de Polignac number, because 129098487 - 2⁸ = 129098231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129098447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438964 + ... + 439257.

It is an arithmetic number, because the mean of its divisors is an integer number (16686218).

Almost surely, 2^129098487 is an apocalyptic number.

129098487 is a deficient number, since it is larger than the sum of its proper divisors (71136129).

129098487 is an equidigital number, since it uses as much as digits as its factorization.

129098487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878238 (or 878231 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 129098487 is about 11362.1515128078. The cubic root of 129098487 is about 505.4059892426.

The spelling of 129098487 in words is "one hundred twenty-nine million, ninety-eight thousand, four hundred eighty-seven".