129788683 has 4 divisors (see below), whose sum is σ = 130122720. Its totient is φ = 129454648.

The previous prime is 129788669. The next prime is 129788767. The reversal of 129788683 is 386887921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129788683 - 2¹⁷ = 129657611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129788683.

It is not an unprimeable number, because it can be changed into a prime (129788653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166435 + ... + 167212.

It is an arithmetic number, because the mean of its divisors is an integer number (32530680).

Almost surely, 2^129788683 is an apocalyptic number.

129788683 is a deficient number, since it is larger than the sum of its proper divisors (334037).

129788683 is an equidigital number, since it uses as much as digits as its factorization.

129788683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334036.

The product of its digits is 1161216, while the sum is 52.

The square root of 129788683 is about 11392.4836185970. The cubic root of 129788683 is about 506.3050686831.

The spelling of 129788683 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, six hundred eighty-three".