394288163 has 8 divisors (see below), whose sum is σ = 407940096. Its totient is φ = 380694600.

The previous prime is 394288129. The next prime is 394288177. The reversal of 394288163 is 361882493.

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 394288163 - 2¹⁶ = 394222627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394288963) 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, 623 + ... + 28088.

It is an arithmetic number, because the mean of its divisors is an integer number (50992512).

Almost surely, 2^394288163 is an apocalyptic number.

394288163 is a deficient number, since it is larger than the sum of its proper divisors (13651933).

394288163 is a wasteful number, since it uses less digits than its factorization.

394288163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29185.

The product of its digits is 248832, while the sum is 44.

The square root of 394288163 is about 19856.6906356523. The cubic root of 394288163 is about 733.2823748107.

The spelling of 394288163 in words is "three hundred ninety-four million, two hundred eighty-eight thousand, one hundred sixty-three".