216794129 has 8 divisors (see below), whose sum is σ = 224512512. Its totient is φ = 209121120.

The previous prime is 216794117. The next prime is 216794197. The reversal of 216794129 is 921497612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216794129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216794329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469 + ... + 20874.

It is an arithmetic number, because the mean of its divisors is an integer number (28064064).

Almost surely, 2^216794129 is an apocalyptic number.

It is an amenable number.

216794129 is a deficient number, since it is larger than the sum of its proper divisors (7718383).

216794129 is a wasteful number, since it uses less digits than its factorization.

216794129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22687.

The product of its digits is 54432, while the sum is 41.

The square root of 216794129 is about 14723.9304874751. The cubic root of 216794129 is about 600.7344053442.

The spelling of 216794129 in words is "two hundred sixteen million, seven hundred ninety-four thousand, one hundred twenty-nine".