219404 has 6 divisors (see below), whose sum is σ = 383964. Its totient is φ = 109700.

The previous prime is 219389. The next prime is 219407. The reversal of 219404 is 404912.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 219404.

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 as a sum of consecutive naturals, namely, 27422 + ... + 27429.

It is an arithmetic number, because the mean of its divisors is an integer number (63994).

2²¹⁹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

219404 is a deficient number, since it is larger than the sum of its proper divisors (164560).

219404 is a wasteful number, since it uses less digits than its factorization.

219404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54855 (or 54853 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 219404 is about 468.4058069666. The cubic root of 219404 is about 60.3135438355.

The spelling of 219404 in words is "two hundred nineteen thousand, four hundred four".