378986087 has 4 divisors (see below), whose sum is σ = 385409640. Its totient is φ = 372562536.

The previous prime is 378986077. The next prime is 378986099. The reversal of 378986087 is 780689873.

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

It is a cyclic number.

It is not a de Polignac number, because 378986087 - 2²⁴ = 362208871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378986077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3211688 + ... + 3211805.

It is an arithmetic number, because the mean of its divisors is an integer number (96352410).

Almost surely, 2^378986087 is an apocalyptic number.

378986087 is a deficient number, since it is larger than the sum of its proper divisors (6423553).

378986087 is an equidigital number, since it uses as much as digits as its factorization.

378986087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423552.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 378986087 is about 19467.5649992494. The cubic root of 378986087 is about 723.6708661116.

The spelling of 378986087 in words is "three hundred seventy-eight million, nine hundred eighty-six thousand, eighty-seven".