219385379 has 2 divisors, whose sum is σ = 219385380. Its totient is φ = 219385378.

The previous prime is 219385337. The next prime is 219385451. The reversal of 219385379 is 973583912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 219385379 - 2¹⁶ = 219319843 is a prime.

It is not a weakly prime, because it can be changed into another prime (219385879) 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, 109692689 + 109692690.

It is an arithmetic number, because the mean of its divisors is an integer number (109692690).

Almost surely, 2^219385379 is an apocalyptic number.

219385379 is a deficient number, since it is larger than the sum of its proper divisors (1).

219385379 is an equidigital number, since it uses as much as digits as its factorization.

219385379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 47.

The square root of 219385379 is about 14811.6636135176. The cubic root of 219385379 is about 603.1183750031.

The spelling of 219385379 in words is "two hundred nineteen million, three hundred eighty-five thousand, three hundred seventy-nine".