378487 has 4 divisors (see below), whose sum is σ = 380016. Its totient is φ = 376960.

The previous prime is 378467. The next prime is 378493. The reversal of 378487 is 784873.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378487 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 (378407) 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, 298 + ... + 919.

It is an arithmetic number, because the mean of its divisors is an integer number (95004).

2³⁷⁸⁴⁸⁷ is an apocalyptic number.

378487 is a deficient number, since it is larger than the sum of its proper divisors (1529).

378487 is a wasteful number, since it uses less digits than its factorization.

378487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its digits is 37632, while the sum is 37.

The square root of 378487 is about 615.2129712547. The cubic root of 378487 is about 72.3353059035.

The spelling of 378487 in words is "three hundred seventy-eight thousand, four hundred eighty-seven".