219401 has 8 divisors (see below), whose sum is σ = 270144. Its totient is φ = 173520.

The previous prime is 219389. The next prime is 219407. The reversal of 219401 is 104912.

It is a happy number.

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 219401 - 2¹⁴ = 203017 is a prime.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 219401.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 219401.

It is not an unprimeable number, because it can be changed into a prime (219407) 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, 1115 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (33768).

2²¹⁹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

219401 is a deficient number, since it is larger than the sum of its proper divisors (50743).

219401 is a wasteful number, since it uses less digits than its factorization.

219401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 219401 is about 468.4026046042. The cubic root of 219401 is about 60.3132689370.

The spelling of 219401 in words is "two hundred nineteen thousand, four hundred one".