129712887 has 16 divisors (see below), whose sum is σ = 193248000. Its totient is φ = 85988952.

The previous prime is 129712837. The next prime is 129712909. The reversal of 129712887 is 788217921.

It is not a de Polignac number, because 129712887 - 2¹⁶ = 129647351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129712837) 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, 8587 + ... + 18252.

It is an arithmetic number, because the mean of its divisors is an integer number (12078000).

Almost surely, 2^129712887 is an apocalyptic number.

129712887 is a deficient number, since it is larger than the sum of its proper divisors (63535113).

129712887 is a wasteful number, since it uses less digits than its factorization.

129712887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27027 (or 27021 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 129712887 is about 11389.1565534942. The cubic root of 129712887 is about 506.2064895390.

The spelling of 129712887 in words is "one hundred twenty-nine million, seven hundred twelve thousand, eight hundred eighty-seven".