378768239 has 2 divisors, whose sum is σ = 378768240. Its totient is φ = 378768238.

The previous prime is 378768193. The next prime is 378768277. The reversal of 378768239 is 932867873.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378768239 - 2¹² = 378764143 is a prime.

It is a super-2 number, since 2×378768239² = 286930757750322242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378768539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189384119 + 189384120.

It is an arithmetic number, because the mean of its divisors is an integer number (189384120).

Almost surely, 2^378768239 is an apocalyptic number.

378768239 is a deficient number, since it is larger than the sum of its proper divisors (1).

378768239 is an equidigital number, since it uses as much as digits as its factorization.

378768239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 53.

The square root of 378768239 is about 19461.9690422115. The cubic root of 378768239 is about 723.5321798708.

The spelling of 378768239 in words is "three hundred seventy-eight million, seven hundred sixty-eight thousand, two hundred thirty-nine".