394496457 has 4 divisors (see below), whose sum is σ = 525995280. Its totient is φ = 262997636.

The previous prime is 394496419. The next prime is 394496467. The reversal of 394496457 is 754694493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394496457 - 2⁶ = 394496393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394496467) 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, 65749407 + ... + 65749412.

It is an arithmetic number, because the mean of its divisors is an integer number (131498820).

Almost surely, 2^394496457 is an apocalyptic number.

It is an amenable number.

394496457 is a deficient number, since it is larger than the sum of its proper divisors (131498823).

394496457 is a wasteful number, since it uses less digits than its factorization.

394496457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131498822.

The product of its digits is 3265920, while the sum is 51.

The square root of 394496457 is about 19861.9348755352. The cubic root of 394496457 is about 733.4114778755.

The spelling of 394496457 in words is "three hundred ninety-four million, four hundred ninety-six thousand, four hundred fifty-seven".