129470087 has 4 divisors (see below), whose sum is σ = 132627936. Its totient is φ = 126312240.

The previous prime is 129470083. The next prime is 129470093. The reversal of 129470087 is 780074921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129470087 - 2² = 129470083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129470087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129470083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578863 + ... + 1578944.

It is an arithmetic number, because the mean of its divisors is an integer number (33156984).

Almost surely, 2^129470087 is an apocalyptic number.

129470087 is a deficient number, since it is larger than the sum of its proper divisors (3157849).

129470087 is an equidigital number, since it uses as much as digits as its factorization.

129470087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157848.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 129470087 is about 11378.4922990702. The cubic root of 129470087 is about 505.8904487169.

The spelling of 129470087 in words is "one hundred twenty-nine million, four hundred seventy thousand, eighty-seven".