394867439 has 8 divisors (see below), whose sum is σ = 401100720. Its totient is φ = 388656576.

The previous prime is 394867399. The next prime is 394867453. The reversal of 394867439 is 934768493.

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 394867439 - 2²⁸ = 126431983 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 (394867469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31844 + ... + 42470.

It is an arithmetic number, because the mean of its divisors is an integer number (50137590).

Almost surely, 2^394867439 is an apocalyptic number.

394867439 is a deficient number, since it is larger than the sum of its proper divisors (6233281).

394867439 is a wasteful number, since it uses less digits than its factorization.

394867439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11209.

The product of its digits is 3919104, while the sum is 53.

The square root of 394867439 is about 19871.2717006235. The cubic root of 394867439 is about 733.6413043698.

The spelling of 394867439 in words is "three hundred ninety-four million, eight hundred sixty-seven thousand, four hundred thirty-nine".