378028447 has 2 divisors, whose sum is σ = 378028448. Its totient is φ = 378028446.

The previous prime is 378028433. The next prime is 378028471. The reversal of 378028447 is 744820873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378028447 - 2⁷ = 378028319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378028747) 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, 189014223 + 189014224.

It is an arithmetic number, because the mean of its divisors is an integer number (189014224).

Almost surely, 2^378028447 is an apocalyptic number.

378028447 is a deficient number, since it is larger than the sum of its proper divisors (1).

378028447 is an equidigital number, since it uses as much as digits as its factorization.

378028447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 378028447 is about 19442.9536593595. The cubic root of 378028447 is about 723.0608167121.

The spelling of 378028447 in words is "three hundred seventy-eight million, twenty-eight thousand, four hundred forty-seven".