216393935 has 8 divisors (see below), whose sum is σ = 274947696. Its totient is φ = 162931840.

The previous prime is 216393929. The next prime is 216393937. The reversal of 216393935 is 539393612.

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

It is a de Polignac number, because none of the positive numbers 2^k-216393935 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216393892 and 216393901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216393937) 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, 1272821 + ... + 1272990.

It is an arithmetic number, because the mean of its divisors is an integer number (34368462).

Almost surely, 2^216393935 is an apocalyptic number.

216393935 is a deficient number, since it is larger than the sum of its proper divisors (58553761).

216393935 is a wasteful number, since it uses less digits than its factorization.

216393935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545833.

The product of its digits is 131220, while the sum is 41.

The square root of 216393935 is about 14710.3342925985. The cubic root of 216393935 is about 600.3645331108.

The spelling of 216393935 in words is "two hundred sixteen million, three hundred ninety-three thousand, nine hundred thirty-five".