129786463 has 4 divisors (see below), whose sum is σ = 130646128. Its totient is φ = 128926800.

The previous prime is 129786439. The next prime is 129786499. The reversal of 129786463 is 364687921.

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 129786463 - 2⁵ = 129786431 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 (129786413) 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, 429606 + ... + 429907.

It is an arithmetic number, because the mean of its divisors is an integer number (32661532).

Almost surely, 2^129786463 is an apocalyptic number.

129786463 is a deficient number, since it is larger than the sum of its proper divisors (859665).

129786463 is an equidigital number, since it uses as much as digits as its factorization.

129786463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859664.

The product of its digits is 435456, while the sum is 46.

The square root of 129786463 is about 11392.3861855188. The cubic root of 129786463 is about 506.3021819300.

The spelling of 129786463 in words is "one hundred twenty-nine million, seven hundred eighty-six thousand, four hundred sixty-three".