394791427 has 4 divisors (see below), whose sum is σ = 394832920. Its totient is φ = 394749936.

The previous prime is 394791407. The next prime is 394791457. The reversal of 394791427 is 724197493.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 394791427 - 2¹⁵ = 394758659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394791407) 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, 1423 + ... + 28135.

It is an arithmetic number, because the mean of its divisors is an integer number (98708230).

Almost surely, 2^394791427 is an apocalyptic number.

394791427 is a deficient number, since it is larger than the sum of its proper divisors (41493).

394791427 is a wasteful number, since it uses less digits than its factorization.

394791427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41492.

The product of its digits is 381024, while the sum is 46.

The square root of 394791427 is about 19869.3589982163. The cubic root of 394791427 is about 733.5942260207.

The spelling of 394791427 in words is "three hundred ninety-four million, seven hundred ninety-one thousand, four hundred twenty-seven".