129199095 has 12 divisors (see below), whose sum is σ = 223945176. Its totient is φ = 68906160.

The previous prime is 129199087. The next prime is 129199097. The reversal of 129199095 is 590991921.

It is not a de Polignac number, because 129199095 - 2³ = 129199087 is a prime.

It is a super-2 number, since 2×129199095² = 33384812297638050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2871091 = 129199095 / (1 + 2 + 9 + 1 + 9 + 9 + 0 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 129199095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129199097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1435501 + ... + 1435590.

It is an arithmetic number, because the mean of its divisors is an integer number (18662098).

Almost surely, 2^129199095 is an apocalyptic number.

129199095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129199095 is a deficient number, since it is larger than the sum of its proper divisors (94746081).

129199095 is a wasteful number, since it uses less digits than its factorization.

129199095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871102 (or 2871099 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 45.

The square root of 129199095 is about 11366.5779810812. The cubic root of 129199095 is about 505.5372448028.

The spelling of 129199095 in words is "one hundred twenty-nine million, one hundred ninety-nine thousand, ninety-five".