219949113 has 4 divisors (see below), whose sum is σ = 293265488. Its totient is φ = 146632740.

The previous prime is 219949091. The next prime is 219949129. The reversal of 219949113 is 311949912.

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 not a de Polignac number, because 219949113 - 2¹⁰ = 219948089 is a prime.

It is a super-2 number, since 2×219949113² = 96755224618973538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (219949313) 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, 36658183 + ... + 36658188.

It is an arithmetic number, because the mean of its divisors is an integer number (73316372).

Almost surely, 2^219949113 is an apocalyptic number.

It is an amenable number.

219949113 is a deficient number, since it is larger than the sum of its proper divisors (73316375).

219949113 is an equidigital number, since it uses as much as digits as its factorization.

219949113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73316374.

The product of its digits is 17496, while the sum is 39.

The square root of 219949113 is about 14830.6814745648. The cubic root of 219949113 is about 603.6345253652.

The spelling of 219949113 in words is "two hundred nineteen million, nine hundred forty-nine thousand, one hundred thirteen".