394496507 has 4 divisors (see below), whose sum is σ = 396147360. Its totient is φ = 392845656.

The previous prime is 394496471. The next prime is 394496513. The reversal of 394496507 is 705694493.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394496507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394496527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825068 + ... + 825545.

It is an arithmetic number, because the mean of its divisors is an integer number (99036840).

Almost surely, 2^394496507 is an apocalyptic number.

394496507 is a deficient number, since it is larger than the sum of its proper divisors (1650853).

394496507 is a wasteful number, since it uses less digits than its factorization.

394496507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650852.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 394496507 is about 19861.9361342242. The cubic root of 394496507 is about 733.4115088606.

The spelling of 394496507 in words is "three hundred ninety-four million, four hundred ninety-six thousand, five hundred seven".