129830494 has 4 divisors (see below), whose sum is σ = 194745744. Its totient is φ = 64915246.

The previous prime is 129830473. The next prime is 129830527. The reversal of 129830494 is 494038921.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32457622 + ... + 32457625.

It is an arithmetic number, because the mean of its divisors is an integer number (48686436).

Almost surely, 2^129830494 is an apocalyptic number.

129830494 is a deficient number, since it is larger than the sum of its proper divisors (64915250).

129830494 is an equidigital number, since it uses as much as digits as its factorization.

129830494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64915249.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 129830494 is about 11394.3184965140. The cubic root of 129830494 is about 506.3594310203.

The spelling of 129830494 in words is "one hundred twenty-nine million, eight hundred thirty thousand, four hundred ninety-four".