129477713 has 4 divisors (see below), whose sum is σ = 132635748. Its totient is φ = 126319680.

The previous prime is 129477709. The next prime is 129477737. The reversal of 129477713 is 317774921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34668544 + 94809169 = 5888^2 + 9737^2 .

It is a cyclic number.

It is not a de Polignac number, because 129477713 - 2² = 129477709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3157993 = 129477713 / (1 + 2 + 9 + 4 + 7 + 7 + 7 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129477113) 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, 1578956 + ... + 1579037.

It is an arithmetic number, because the mean of its divisors is an integer number (33158937).

Almost surely, 2^129477713 is an apocalyptic number.

It is an amenable number.

129477713 is a deficient number, since it is larger than the sum of its proper divisors (3158035).

129477713 is an equidigital number, since it uses as much as digits as its factorization.

129477713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158034.

The product of its digits is 74088, while the sum is 41.

The square root of 129477713 is about 11378.8274000443. The cubic root of 129477713 is about 505.9003811137.

The spelling of 129477713 in words is "one hundred twenty-nine million, four hundred seventy-seven thousand, seven hundred thirteen".