129612486 has 8 divisors (see below), whose sum is σ = 259224984. Its totient is φ = 43204160.

The previous prime is 129612479. The next prime is 129612491. The reversal of 129612486 is 684216921.

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

129612486 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 10801035 + ... + 10801046.

It is an arithmetic number, because the mean of its divisors is an integer number (32403123).

Almost surely, 2^129612486 is an apocalyptic number.

129612486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129612486 is a wasteful number, since it uses less digits than its factorization.

129612486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21602086.

The product of its digits is 41472, while the sum is 39.

The square root of 129612486 is about 11384.7479550493. The cubic root of 129612486 is about 506.0758503571.

The spelling of 129612486 in words is "one hundred twenty-nine million, six hundred twelve thousand, four hundred eighty-six".