129826894 has 8 divisors (see below), whose sum is σ = 194848488. Its totient is φ = 64877400.

The previous prime is 129826889. The next prime is 129826897. The reversal of 129826894 is 498628921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129826897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13272 + ... + 20875.

It is an arithmetic number, because the mean of its divisors is an integer number (24356061).

Almost surely, 2^129826894 is an apocalyptic number.

129826894 is a deficient number, since it is larger than the sum of its proper divisors (65021594).

129826894 is a wasteful number, since it uses less digits than its factorization.

129826894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36050.

The product of its digits is 497664, while the sum is 49.

The square root of 129826894 is about 11394.1605219516. The cubic root of 129826894 is about 506.3547507875.

The spelling of 129826894 in words is "one hundred twenty-nine million, eight hundred twenty-six thousand, eight hundred ninety-four".