378749 has 8 divisors (see below), whose sum is σ = 440448. Its totient is φ = 318960.

The previous prime is 378739. The next prime is 378757. The reversal of 378749 is 947873.

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

It is a cyclic number.

It is not a de Polignac number, because 378749 - 2⁴ = 378733 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 (378739) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17 + ... + 870.

It is an arithmetic number, because the mean of its divisors is an integer number (55056).

2³⁷⁸⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

378749 is a deficient number, since it is larger than the sum of its proper divisors (61699).

378749 is an equidigital number, since it uses as much as digits as its factorization.

378749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 42336, while the sum is 38.

The square root of 378749 is about 615.4258688096. The cubic root of 378749 is about 72.3519929397.

The spelling of 378749 in words is "three hundred seventy-eight thousand, seven hundred forty-nine".