129667967 has 16 divisors (see below), whose sum is σ = 153299328. Its totient is φ = 108125280.

The previous prime is 129667949. The next prime is 129667973. The reversal of 129667967 is 769766921.

It is a cyclic number.

It is not a de Polignac number, because 129667967 - 2⁸ = 129667711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129667907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20528 + ... + 26090.

It is an arithmetic number, because the mean of its divisors is an integer number (9581208).

Almost surely, 2^129667967 is an apocalyptic number.

129667967 is a deficient number, since it is larger than the sum of its proper divisors (23631361).

129667967 is a wasteful number, since it uses less digits than its factorization.

129667967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750.

The product of its digits is 1714608, while the sum is 53.

The square root of 129667967 is about 11387.1843315194. The cubic root of 129667967 is about 506.1480491342.

The spelling of 129667967 in words is "one hundred twenty-nine million, six hundred sixty-seven thousand, nine hundred sixty-seven".