129919935 has 32 divisors (see below), whose sum is σ = 213414912. Its totient is φ = 67466880.

The previous prime is 129919931. The next prime is 129919943. The reversal of 129919935 is 539919921.

It is not a de Polignac number, because 129919935 - 2² = 129919931 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129919931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97242 + ... + 98568.

It is an arithmetic number, because the mean of its divisors is an integer number (6669216).

Almost surely, 2^129919935 is an apocalyptic number.

129919935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129919935 is a deficient number, since it is larger than the sum of its proper divisors (83494977).

129919935 is a wasteful number, since it uses less digits than its factorization.

129919935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its digits is 196830, while the sum is 48.

The square root of 129919935 is about 11398.2426277036. The cubic root of 129919935 is about 506.4756823375.

The spelling of 129919935 in words is "one hundred twenty-nine million, nine hundred nineteen thousand, nine hundred thirty-five".