219376993 has 12 divisors (see below), whose sum is σ = 255320100. Its totient is φ = 187700480.

The previous prime is 219376897. The next prime is 219377009. The reversal of 219376993 is 399673912.

219376993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 194546704 + 24830289 = 13948^2 + 4983^2 .

It is not a de Polignac number, because 219376993 - 2²¹ = 217279841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219376193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51268 + ... + 55381.

It is an arithmetic number, because the mean of its divisors is an integer number (21276675).

Almost surely, 2^219376993 is an apocalyptic number.

It is an amenable number.

219376993 is a deficient number, since it is larger than the sum of its proper divisors (35943107).

219376993 is a wasteful number, since it uses less digits than its factorization.

219376993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106688 (or 106677 counting only the distinct ones).

The product of its digits is 551124, while the sum is 49.

The square root of 219376993 is about 14811.3805230978. The cubic root of 219376993 is about 603.1106901775.

The spelling of 219376993 in words is "two hundred nineteen million, three hundred seventy-six thousand, nine hundred ninety-three".