394242427 has 16 divisors (see below), whose sum is σ = 424353600. Its totient is φ = 364953600.

The previous prime is 394242403. The next prime is 394242467. The reversal of 394242427 is 724242493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394242427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394242467) 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, 279099 + ... + 280507.

It is an arithmetic number, because the mean of its divisors is an integer number (26522100).

Almost surely, 2^394242427 is an apocalyptic number.

394242427 is a deficient number, since it is larger than the sum of its proper divisors (30111173).

394242427 is a wasteful number, since it uses less digits than its factorization.

394242427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686.

The product of its digits is 96768, while the sum is 37.

The square root of 394242427 is about 19855.5389501267. The cubic root of 394242427 is about 733.2540210138.

The spelling of 394242427 in words is "three hundred ninety-four million, two hundred forty-two thousand, four hundred twenty-seven".