129603994 has 32 divisors (see below), whose sum is σ = 218179584. Its totient is φ = 57335040.

The previous prime is 129603989. The next prime is 129604001. The reversal of 129603994 is 499306921.

It is a self number, because there is not a number n which added to its sum of digits gives 129603994.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90367 + ... + 91789.

It is an arithmetic number, because the mean of its divisors is an integer number (6818112).

Almost surely, 2^129603994 is an apocalyptic number.

129603994 is a deficient number, since it is larger than the sum of its proper divisors (88575590).

129603994 is a wasteful number, since it uses less digits than its factorization.

129603994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 129603994 is about 11384.3749938238. The cubic root of 129603994 is about 506.0647976926.

The spelling of 129603994 in words is "one hundred twenty-nine million, six hundred three thousand, nine hundred ninety-four".