378986089 has 4 divisors (see below), whose sum is σ = 379133524. Its totient is φ = 378838656.

The previous prime is 378986077. The next prime is 378986099. The reversal of 378986089 is 980689873.

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

It can be written as a sum of positive squares in 2 ways, for example, as 328334400 + 50651689 = 18120^2 + 7117^2 .

It is a cyclic number.

It is not a de Polignac number, because 378986089 - 2⁹ = 378985577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378986029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69792 + ... + 75025.

It is an arithmetic number, because the mean of its divisors is an integer number (94783381).

Almost surely, 2^378986089 is an apocalyptic number.

It is an amenable number.

378986089 is a deficient number, since it is larger than the sum of its proper divisors (147435).

378986089 is a wasteful number, since it uses less digits than its factorization.

378986089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147434.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 378986089 is about 19467.5650506169. The cubic root of 378986089 is about 723.6708673846.

The spelling of 378986089 in words is "three hundred seventy-eight million, nine hundred eighty-six thousand, eighty-nine".