394478201 has 16 divisors (see below), whose sum is σ = 442487808. Its totient is φ = 349272000.

The previous prime is 394478153. The next prime is 394478219. The reversal of 394478201 is 102874493.

It is a cyclic number.

It is not a de Polignac number, because 394478201 - 2⁶ = 394478137 is a prime.

It is a super-2 number, since 2×394478201² = 311226102128392802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394478501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28376 + ... + 39926.

It is an arithmetic number, because the mean of its divisors is an integer number (27655488).

Almost surely, 2^394478201 is an apocalyptic number.

It is an amenable number.

394478201 is a deficient number, since it is larger than the sum of its proper divisors (48009607).

394478201 is a wasteful number, since it uses less digits than its factorization.

394478201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 394478201 is about 19861.4752976711. The cubic root of 394478201 is about 733.4001644097.

The spelling of 394478201 in words is "three hundred ninety-four million, four hundred seventy-eight thousand, two hundred one".