394496503 has 4 divisors (see below), whose sum is σ = 394536400. Its totient is φ = 394456608.

The previous prime is 394496471. The next prime is 394496513. The reversal of 394496503 is 305694493.

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 394496503 - 2⁵ = 394496471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394496503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394496513) 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, 7198 + ... + 28996.

It is an arithmetic number, because the mean of its divisors is an integer number (98634100).

Almost surely, 2^394496503 is an apocalyptic number.

394496503 is a deficient number, since it is larger than the sum of its proper divisors (39897).

394496503 is a wasteful number, since it uses less digits than its factorization.

394496503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39896.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 394496503 is about 19861.9360335291. The cubic root of 394496503 is about 733.4115063818.

The spelling of 394496503 in words is "three hundred ninety-four million, four hundred ninety-six thousand, five hundred three".