216419 has 8 divisors (see below), whose sum is σ = 253440. Its totient is φ = 180936.

The previous prime is 216401. The next prime is 216421. The reversal of 216419 is 914612.

It is a happy number.

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

It is not a de Polignac number, because 216419 - 2¹⁶ = 150883 is a prime.

It is a super-2 number, since 2×216419² = 93674367122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216394 and 216403.

It is not an unprimeable number, because it can be changed into a prime (216119) 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, 59 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (31680).

2²¹⁶⁴¹⁹ is an apocalyptic number.

216419 is a deficient number, since it is larger than the sum of its proper divisors (37021).

216419 is an equidigital number, since it uses as much as digits as its factorization.

216419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its digits is 432, while the sum is 23.

The square root of 216419 is about 465.2085553813. The cubic root of 216419 is about 60.0387712374.

The spelling of 216419 in words is "two hundred sixteen thousand, four hundred nineteen".