129386954 has 8 divisors (see below), whose sum is σ = 196261380. Its totient is φ = 63966496.

The previous prime is 129386947. The next prime is 129386969. The reversal of 129386954 is 459683921.

It can be written as a sum of positive squares in 2 ways, for example, as 129163225 + 223729 = 11365^2 + 473^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129386899 and 129386908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363269 + ... + 363624.

Almost surely, 2^129386954 is an apocalyptic number.

129386954 is a deficient number, since it is larger than the sum of its proper divisors (66874426).

129386954 is an equidigital number, since it uses as much as digits as its factorization.

129386954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726984.

The product of its digits is 466560, while the sum is 47.

The square root of 129386954 is about 11374.8386362181. The cubic root of 129386954 is about 505.7821477796.

The spelling of 129386954 in words is "one hundred twenty-nine million, three hundred eighty-six thousand, nine hundred fifty-four".