13780379 has 2 divisors, whose sum is σ = 13780380. Its totient is φ = 13780378.

The previous prime is 13780373. The next prime is 13780397. The reversal of 13780379 is 97308731.

It is a happy number.

13780379 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

Together with next prime (13780397) 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 13780379 - 2¹⁶ = 13714843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13780373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6890189 + 6890190.

It is an arithmetic number, because the mean of its divisors is an integer number (6890190).

Almost surely, 2^13780379 is an apocalyptic number.

13780379 is a deficient number, since it is larger than the sum of its proper divisors (1).

13780379 is an equidigital number, since it uses as much as digits as its factorization.

13780379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 13780379 is about 3712.1932869936. The cubic root of 13780379 is about 239.7472976739.

The spelling of 13780379 in words is "thirteen million, seven hundred eighty thousand, three hundred seventy-nine".