216490799 has 8 divisors (see below), whose sum is σ = 247830528. Its totient is φ = 185254200.

The previous prime is 216490793. The next prime is 216490819. The reversal of 216490799 is 997094612.

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

It is a cyclic number.

It is not a de Polignac number, because 216490799 - 2⁸ = 216490543 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 (216490793) 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, 21227 + ... + 29724.

It is an arithmetic number, because the mean of its divisors is an integer number (30978816).

Almost surely, 2^216490799 is an apocalyptic number.

216490799 is a deficient number, since it is larger than the sum of its proper divisors (31339729).

216490799 is an equidigital number, since it uses as much as digits as its factorization.

216490799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51565.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 216490799 is about 14713.6263035324. The cubic root of 216490799 is about 600.4540997542.

The spelling of 216490799 in words is "two hundred sixteen million, four hundred ninety thousand, seven hundred ninety-nine".