13789819 has 4 divisors (see below), whose sum is σ = 14265360. Its totient is φ = 13314280.

The previous prime is 13789793. The next prime is 13789837. The reversal of 13789819 is 91898731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13789819 - 2²³ = 5401211 is a prime.

It is a super-2 number, since 2×13789819² = 380318216105522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13789859) 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, 237727 + ... + 237784.

It is an arithmetic number, because the mean of its divisors is an integer number (3566340).

Almost surely, 2^13789819 is an apocalyptic number.

13789819 is a deficient number, since it is larger than the sum of its proper divisors (475541).

13789819 is an equidigital number, since it uses as much as digits as its factorization.

13789819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475540.

The product of its digits is 108864, while the sum is 46.

The square root of 13789819 is about 3713.4645548329. The cubic root of 13789819 is about 239.8020300315.

The spelling of 13789819 in words is "thirteen million, seven hundred eighty-nine thousand, eight hundred nineteen".