219149 has 4 divisors (see below), whose sum is σ = 250464. Its totient is φ = 187836.

The previous prime is 219143. The next prime is 219169. The reversal of 219149 is 941912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 219149 - 2⁴ = 219133 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15647 + ... + 15660.

It is an arithmetic number, because the mean of its divisors is an integer number (62616).

2²¹⁹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

219149 is a deficient number, since it is larger than the sum of its proper divisors (31315).

219149 is an equidigital number, since it uses as much as digits as its factorization.

219149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31314.

The product of its digits is 648, while the sum is 26.

The square root of 219149 is about 468.1335279597. The cubic root of 219149 is about 60.2901685158.

The spelling of 219149 in words is "two hundred nineteen thousand, one hundred forty-nine".