13779091 has 2 divisors, whose sum is σ = 13779092. Its totient is φ = 13779090.

The previous prime is 13779071. The next prime is 13779109. The reversal of 13779091 is 19097731.

13779091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (13779109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (19097731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13779091 - 2⁹ = 13778579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13779091.

It is not a weakly prime, because it can be changed into another prime (13779011) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6889545 + 6889546.

It is an arithmetic number, because the mean of its divisors is an integer number (6889546).

Almost surely, 2^13779091 is an apocalyptic number.

13779091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13779091 is an equidigital number, since it uses as much as digits as its factorization.

13779091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 13779091 is about 3712.0198005937. The cubic root of 13779091 is about 239.7398280162.

The spelling of 13779091 in words is "thirteen million, seven hundred seventy-nine thousand, ninety-one".