378744439 has 2 divisors, whose sum is σ = 378744440. Its totient is φ = 378744438.

The previous prime is 378744403. The next prime is 378744467. The reversal of 378744439 is 934447873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378744439 - 2⁹ = 378743927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378744392 and 378744401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378744239) 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, 189372219 + 189372220.

It is an arithmetic number, because the mean of its divisors is an integer number (189372220).

Almost surely, 2^378744439 is an apocalyptic number.

378744439 is a deficient number, since it is larger than the sum of its proper divisors (1).

378744439 is an equidigital number, since it uses as much as digits as its factorization.

378744439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 49.

The square root of 378744439 is about 19461.3575836836. The cubic root of 378744439 is about 723.5170251097.

The spelling of 378744439 in words is "three hundred seventy-eight million, seven hundred forty-four thousand, four hundred thirty-nine".