216914413 has 4 divisors (see below), whose sum is σ = 217168380. Its totient is φ = 216660448.

The previous prime is 216914389. The next prime is 216914419. The reversal of 216914413 is 314419612.

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 211615209 + 5299204 = 14547^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 216914413 - 2⁹ = 216913901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216914419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125698 + ... + 127411.

It is an arithmetic number, because the mean of its divisors is an integer number (54292095).

Almost surely, 2^216914413 is an apocalyptic number.

It is an amenable number.

216914413 is a deficient number, since it is larger than the sum of its proper divisors (253967).

216914413 is an equidigital number, since it uses as much as digits as its factorization.

216914413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253966.

The product of its digits is 5184, while the sum is 31.

The square root of 216914413 is about 14728.0145640884. The cubic root of 216914413 is about 600.8454867311.

The spelling of 216914413 in words is "two hundred sixteen million, nine hundred fourteen thousand, four hundred thirteen".