394558241 has 24 divisors (see below), whose sum is σ = 501880896. Its totient is φ = 306724320.

The previous prime is 394558231. The next prime is 394558247. The reversal of 394558241 is 142855493.

It is not a de Polignac number, because 394558241 - 2¹⁰ = 394557217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394558247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407540 + ... + 408506.

It is an arithmetic number, because the mean of its divisors is an integer number (20911704).

Almost surely, 2^394558241 is an apocalyptic number.

It is an amenable number.

394558241 is a deficient number, since it is larger than the sum of its proper divisors (107322655).

394558241 is a wasteful number, since it uses less digits than its factorization.

394558241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1742 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 394558241 is about 19863.4901515318. The cubic root of 394558241 is about 733.4497635843.

The spelling of 394558241 in words is "three hundred ninety-four million, five hundred fifty-eight thousand, two hundred forty-one".