378269399 has 2 divisors, whose sum is σ = 378269400. Its totient is φ = 378269398.

The previous prime is 378269387. The next prime is 378269447. The reversal of 378269399 is 993962873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378269399 - 2²⁸ = 109833943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378269369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189134699 + 189134700.

It is an arithmetic number, because the mean of its divisors is an integer number (189134700).

Almost surely, 2^378269399 is an apocalyptic number.

378269399 is a deficient number, since it is larger than the sum of its proper divisors (1).

378269399 is an equidigital number, since it uses as much as digits as its factorization.

378269399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 56.

The square root of 378269399 is about 19449.1490559356. The cubic root of 378269399 is about 723.2144082812.

The spelling of 378269399 in words is "three hundred seventy-eight million, two hundred sixty-nine thousand, three hundred ninety-nine".