13790779 has 2 divisors, whose sum is σ = 13790780. Its totient is φ = 13790778.

The previous prime is 13790767. The next prime is 13790797. The reversal of 13790779 is 97709731.

It is a happy number.

Together with next prime (13790797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13790779 - 2¹⁵ = 13758011 is a prime.

It is equal to p₈₉₇₃₇₉ and since 13790779 and 897379 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13790729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6895389 + 6895390.

It is an arithmetic number, because the mean of its divisors is an integer number (6895390).

Almost surely, 2^13790779 is an apocalyptic number.

13790779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13790779 is an equidigital number, since it uses as much as digits as its factorization.

13790779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 13790779 is about 3713.5938119294. The cubic root of 13790779 is about 239.8075946345.

The spelling of 13790779 in words is "thirteen million, seven hundred ninety thousand, seven hundred seventy-nine".