378869 has 2 divisors, whose sum is σ = 378870. Its totient is φ = 378868.

The previous prime is 378823. The next prime is 378883. The reversal of 378869 is 968873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280900 + 97969 = 530^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 378869 - 2¹⁶ = 313333 is a prime.

It is a super-2 number, since 2×378869² = 287083438322, 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 (378809) 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, 189434 + 189435.

It is an arithmetic number, because the mean of its divisors is an integer number (189435).

2³⁷⁸⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

378869 is a deficient number, since it is larger than the sum of its proper divisors (1).

378869 is an equidigital number, since it uses as much as digits as its factorization.

378869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 378869 is about 615.5233545529. The cubic root of 378869 is about 72.3596332876.

The spelling of 378869 in words is "three hundred seventy-eight thousand, eight hundred sixty-nine".