378847 has 4 divisors (see below), whose sum is σ = 432976. Its totient is φ = 324720.

The previous prime is 378823. The next prime is 378869. The reversal of 378847 is 748873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748873 = 227 ⋅3299.

It is a cyclic number.

It is not a de Polignac number, because 378847 - 2¹⁵ = 346079 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 (378817) 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, 27054 + ... + 27067.

It is an arithmetic number, because the mean of its divisors is an integer number (108244).

2³⁷⁸⁸⁴⁷ is an apocalyptic number.

378847 is a deficient number, since it is larger than the sum of its proper divisors (54129).

378847 is an equidigital number, since it uses as much as digits as its factorization.

378847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54128.

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

The square root of 378847 is about 615.5054833224. The cubic root of 378847 is about 72.3582326779.

It can be divided in two parts, 378 and 847, that added together give a triangular number (1225 = T₄₉).

The spelling of 378847 in words is "three hundred seventy-eight thousand, eight hundred forty-seven".