219429 has 28 divisors (see below), whose sum is σ = 384736. Its totient is φ = 122472.

The previous prime is 219409. The next prime is 219433. The reversal of 219429 is 924912.

219429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 219429 - 2⁷ = 219301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 219429.

It is not an unprimeable number, because it can be changed into a prime (219409) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5082 + ... + 5124.

2²¹⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

219429 is a deficient number, since it is larger than the sum of its proper divisors (165307).

219429 is an frugal number, since it uses more digits than its factorization.

219429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 53 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 219429 is about 468.4324924682. The cubic root of 219429 is about 60.3158345584.

The spelling of 219429 in words is "two hundred nineteen thousand, four hundred twenty-nine".