129934585 has 16 divisors (see below), whose sum is σ = 170346240. Its totient is φ = 94359040.

The previous prime is 129934583. The next prime is 129934601. The reversal of 129934585 is 585439921.

129934585 = T₄₈₅₅ + T₄₈₅₆ + ... + T₄₈₆₅.

It is not a de Polignac number, because 129934585 - 2¹ = 129934583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129934583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49824 + ... + 52366.

It is an arithmetic number, because the mean of its divisors is an integer number (10646640).

Almost surely, 2^129934585 is an apocalyptic number.

It is an amenable number.

129934585 is a deficient number, since it is larger than the sum of its proper divisors (40411655).

129934585 is a wasteful number, since it uses less digits than its factorization.

129934585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its digits is 388800, while the sum is 46.

The square root of 129934585 is about 11398.8852525148. The cubic root of 129934585 is about 506.4947186511.

It can be divided in two parts, 12993 and 4585, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 129934585 in words is "one hundred twenty-nine million, nine hundred thirty-four thousand, five hundred eighty-five".