129548979 has 12 divisors (see below), whose sum is σ = 213858736. Its totient is φ = 74027952.

The previous prime is 129548957. The next prime is 129548983. The reversal of 129548979 is 979845921.

129548979 is a `hidden beast` number, since 1 + 2 + 9 + 548 + 97 + 9 = 666.

It is not a de Polignac number, because 129548979 - 2⁷ = 129548851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129548929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1028104 + ... + 1028229.

Almost surely, 2^129548979 is an apocalyptic number.

129548979 is a deficient number, since it is larger than the sum of its proper divisors (84309757).

129548979 is a wasteful number, since it uses less digits than its factorization.

129548979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056346 (or 2056343 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 129548979 is about 11381.9584870092. The cubic root of 129548979 is about 505.9931818565.

The spelling of 129548979 in words is "one hundred twenty-nine million, five hundred forty-eight thousand, nine hundred seventy-nine".