394969227 has 4 divisors (see below), whose sum is σ = 526625640. Its totient is φ = 263312816.

The previous prime is 394969213. The next prime is 394969231. The reversal of 394969227 is 722969493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722969493 = 3 ⋅240989831.

It is a cyclic number.

It is not a de Polignac number, because 394969227 - 2⁶ = 394969163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394969227.

It is not an unprimeable number, because it can be changed into a prime (394969297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65828202 + ... + 65828207.

It is an arithmetic number, because the mean of its divisors is an integer number (131656410).

Almost surely, 2^394969227 is an apocalyptic number.

394969227 is a deficient number, since it is larger than the sum of its proper divisors (131656413).

394969227 is a wasteful number, since it uses less digits than its factorization.

394969227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131656412.

The product of its digits is 1469664, while the sum is 51.

The square root of 394969227 is about 19873.8327204392. The cubic root of 394969227 is about 733.7043377308.

The spelling of 394969227 in words is "three hundred ninety-four million, nine hundred sixty-nine thousand, two hundred twenty-seven".