378946 has 4 divisors (see below), whose sum is σ = 568422. Its totient is φ = 189472.

The previous prime is 378941. The next prime is 378949. The reversal of 378946 is 649873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 373321 + 5625 = 611^2 + 75^2 .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (378941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94735 + ... + 94738.

2³⁷⁸⁹⁴⁶ is an apocalyptic number.

378946 is a deficient number, since it is larger than the sum of its proper divisors (189476).

378946 is a wasteful number, since it uses less digits than its factorization.

378946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189475.

The product of its digits is 36288, while the sum is 37.

The square root of 378946 is about 615.5858997735. The cubic root of 378946 is about 72.3645349945.

The spelling of 378946 in words is "three hundred seventy-eight thousand, nine hundred forty-six".