378832439 has 4 divisors (see below), whose sum is σ = 378914520. Its totient is φ = 378750360.

The previous prime is 378832427. The next prime is 378832453. The reversal of 378832439 is 934238873.

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-378832439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378832393 and 378832402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378832409) 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, 33677 + ... + 43494.

It is an arithmetic number, because the mean of its divisors is an integer number (94728630).

Almost surely, 2^378832439 is an apocalyptic number.

378832439 is a deficient number, since it is larger than the sum of its proper divisors (82081).

378832439 is an equidigital number, since it uses as much as digits as its factorization.

378832439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82080.

The product of its digits is 870912, while the sum is 47.

The square root of 378832439 is about 19463.6183429495. The cubic root of 378832439 is about 723.5730563550.

The spelling of 378832439 in words is "three hundred seventy-eight million, eight hundred thirty-two thousand, four hundred thirty-nine".