394471249 has 4 divisors (see below), whose sum is σ = 407196160. Its totient is φ = 381746340.

The previous prime is 394471241. The next prime is 394471267. The reversal of 394471249 is 942174493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394471249 - 2³ = 394471241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394471241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6362409 + ... + 6362470.

It is an arithmetic number, because the mean of its divisors is an integer number (101799040).

Almost surely, 2^394471249 is an apocalyptic number.

It is an amenable number.

394471249 is a deficient number, since it is larger than the sum of its proper divisors (12724911).

394471249 is a wasteful number, since it uses less digits than its factorization.

394471249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724910.

The product of its digits is 217728, while the sum is 43.

The square root of 394471249 is about 19861.3002847246. The cubic root of 394471249 is about 733.3958560788.

The spelling of 394471249 in words is "three hundred ninety-four million, four hundred seventy-one thousand, two hundred forty-nine".