394674219 has 6 divisors (see below), whose sum is σ = 570084996. Its totient is φ = 263116140.

The previous prime is 394674197. The next prime is 394674221. The reversal of 394674219 is 912476493.

It is a happy number.

It is not a de Polignac number, because 394674219 - 2¹¹ = 394672171 is a prime.

It is a super-2 number, since 2×394674219² = 311535478286519922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394674229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21926337 + ... + 21926354.

It is an arithmetic number, because the mean of its divisors is an integer number (95014166).

Almost surely, 2^394674219 is an apocalyptic number.

394674219 is a deficient number, since it is larger than the sum of its proper divisors (175410777).

394674219 is a wasteful number, since it uses less digits than its factorization.

394674219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43852697 (or 43852694 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 394674219 is about 19866.4093132101. The cubic root of 394674219 is about 733.5216209127.

The spelling of 394674219 in words is "three hundred ninety-four million, six hundred seventy-four thousand, two hundred nineteen".