394668204739 has 8 divisors (see below), whose sum is σ = 402438123360. Its totient is φ = 386959708800.

The previous prime is 394668204701. The next prime is 394668204773. The reversal of 394668204739 is 937402866493.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394668204739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394668204239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15342694 + ... + 15368395.

It is an arithmetic number, because the mean of its divisors is an integer number (50304765420).

Almost surely, 2^394668204739 is an apocalyptic number.

394668204739 is a deficient number, since it is larger than the sum of its proper divisors (7769918621).

394668204739 is a wasteful number, since it uses less digits than its factorization.

394668204739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30711341.

The product of its (nonzero) digits is 47029248, while the sum is 61.

The spelling of 394668204739 in words is "three hundred ninety-four billion, six hundred sixty-eight million, two hundred four thousand, seven hundred thirty-nine".