378323447 has 2 divisors, whose sum is σ = 378323448. Its totient is φ = 378323446.

The previous prime is 378323437. The next prime is 378323467. The reversal of 378323447 is 744323873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378323447 - 2¹⁸ = 378061303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378323437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189161723 + 189161724.

It is an arithmetic number, because the mean of its divisors is an integer number (189161724).

Almost surely, 2^378323447 is an apocalyptic number.

378323447 is a deficient number, since it is larger than the sum of its proper divisors (1).

378323447 is an equidigital number, since it uses as much as digits as its factorization.

378323447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 41.

The square root of 378323447 is about 19450.5384758366. The cubic root of 378323447 is about 723.2488514857.

The spelling of 378323447 in words is "three hundred seventy-eight million, three hundred twenty-three thousand, four hundred forty-seven".