13779213 has 8 divisors (see below), whose sum is σ = 20996928. Its totient is φ = 7873824.

The previous prime is 13779193. The next prime is 13779217. The reversal of 13779213 is 31297731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13779213 - 2⁶ = 13779149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13779217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328056 + ... + 328097.

It is an arithmetic number, because the mean of its divisors is an integer number (2624616).

Almost surely, 2^13779213 is an apocalyptic number.

It is an amenable number.

13779213 is a deficient number, since it is larger than the sum of its proper divisors (7217715).

13779213 is an equidigital number, since it uses as much as digits as its factorization.

13779213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656163.

The product of its digits is 7938, while the sum is 33.

The square root of 13779213 is about 3712.0362336594. The cubic root of 13779213 is about 239.7405355658.

The spelling of 13779213 in words is "thirteen million, seven hundred seventy-nine thousand, two hundred thirteen".