13920859 has 2 divisors, whose sum is σ = 13920860. Its totient is φ = 13920858.

The previous prime is 13920833. The next prime is 13920877. The reversal of 13920859 is 95802931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13920859 - 2¹⁹ = 13396571 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13920259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6960429 + 6960430.

It is an arithmetic number, because the mean of its divisors is an integer number (6960430).

Almost surely, 2^13920859 is an apocalyptic number.

13920859 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920859 is an equidigital number, since it uses as much as digits as its factorization.

13920859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 13920859 is about 3731.0667375430. The cubic root of 13920859 is about 240.5592225671.

The spelling of 13920859 in words is "thirteen million, nine hundred twenty thousand, eight hundred fifty-nine".