129805795 has 48 divisors (see below), whose sum is σ = 194338368. Its totient is φ = 81469440.

The previous prime is 129805789. The next prime is 129805807. The reversal of 129805795 is 597508921.

It is not a de Polignac number, because 129805795 - 2¹¹ = 129803747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 414559 + ... + 414871.

It is an arithmetic number, because the mean of its divisors is an integer number (4048716).

Almost surely, 2^129805795 is an apocalyptic number.

129805795 is a deficient number, since it is larger than the sum of its proper divisors (64532573).

129805795 is a wasteful number, since it uses less digits than its factorization.

129805795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 129805795 is about 11393.2346153320. The cubic root of 129805795 is about 506.3273189836.

The spelling of 129805795 in words is "one hundred twenty-nine million, eight hundred five thousand, seven hundred ninety-five".