378942986 has 8 divisors (see below), whose sum is σ = 593128224. Its totient is φ = 181233580.

The previous prime is 378942923. The next prime is 378943003. The reversal of 378942986 is 689249873.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4118900 + ... + 4118991.

It is an arithmetic number, because the mean of its divisors is an integer number (74141028).

Almost surely, 2^378942986 is an apocalyptic number.

378942986 is a deficient number, since it is larger than the sum of its proper divisors (214185238).

378942986 is a wasteful number, since it uses less digits than its factorization.

378942986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237916.

The product of its digits is 5225472, while the sum is 56.

The square root of 378942986 is about 19466.4579726256. The cubic root of 378942986 is about 723.6434314014.

The spelling of 378942986 in words is "three hundred seventy-eight million, nine hundred forty-two thousand, nine hundred eighty-six".