129386087 has 8 divisors (see below), whose sum is σ = 130572000. Its totient is φ = 128204704.

The previous prime is 129386053. The next prime is 129386093. The reversal of 129386087 is 780683921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129386087 - 2⁸ = 129385831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129386027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82214 + ... + 83772.

It is an arithmetic number, because the mean of its divisors is an integer number (16321500).

Almost surely, 2^129386087 is an apocalyptic number.

129386087 is a deficient number, since it is larger than the sum of its proper divisors (1185913).

129386087 is a wasteful number, since it uses less digits than its factorization.

129386087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 129386087 is about 11374.8005257235. The cubic root of 129386087 is about 505.7810180570.

The spelling of 129386087 in words is "one hundred twenty-nine million, three hundred eighty-six thousand, eighty-seven".