129774813 has 8 divisors (see below), whose sum is σ = 197752128. Its totient is φ = 74157024.

The previous prime is 129774811. The next prime is 129774829. The reversal of 129774813 is 318477921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129774813 - 2¹ = 129774811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129774811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3089856 + ... + 3089897.

It is an arithmetic number, because the mean of its divisors is an integer number (24719016).

Almost surely, 2^129774813 is an apocalyptic number.

It is an amenable number.

129774813 is a deficient number, since it is larger than the sum of its proper divisors (67977315).

129774813 is an equidigital number, since it uses as much as digits as its factorization.

129774813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179763.

The product of its digits is 84672, while the sum is 42.

The square root of 129774813 is about 11391.8748676414. The cubic root of 129774813 is about 506.2870324381.

The spelling of 129774813 in words is "one hundred twenty-nine million, seven hundred seventy-four thousand, eight hundred thirteen".