394828263 has 20 divisors (see below), whose sum is σ = 590339640. Its totient is φ = 262980432.

The previous prime is 394828241. The next prime is 394828267. The reversal of 394828263 is 362828493.

394828263 is a `hidden beast` number, since 39 + 482 + 82 + 63 = 666.

It is not a de Polignac number, because 394828263 - 2¹⁸ = 394566119 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394828267) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 175381 + ... + 177617.

It is an arithmetic number, because the mean of its divisors is an integer number (29516982).

Almost surely, 2^394828263 is an apocalyptic number.

394828263 is a deficient number, since it is larger than the sum of its proper divisors (195511377).

394828263 is a wasteful number, since it uses less digits than its factorization.

394828263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428 (or 4419 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 394828263 is about 19870.2859315109. The cubic root of 394828263 is about 733.6170413054.

The spelling of 394828263 in words is "three hundred ninety-four million, eight hundred twenty-eight thousand, two hundred sixty-three".