503940017 has 4 divisors (see below), whose sum is σ = 575931456. Its totient is φ = 431948580.

The previous prime is 503940007. The next prime is 503940023. The reversal of 503940017 is 710049305.

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 not a de Polignac number, because 503940017 - 2²² = 499745713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503940007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35995709 + ... + 35995722.

It is an arithmetic number, because the mean of its divisors is an integer number (143982864).

Almost surely, 2^503940017 is an apocalyptic number.

It is an amenable number.

503940017 is a deficient number, since it is larger than the sum of its proper divisors (71991439).

503940017 is an equidigital number, since it uses as much as digits as its factorization.

503940017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71991438.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 503940017 is about 22448.6083533033. The cubic root of 503940017 is about 795.7798694552.

The spelling of 503940017 in words is "five hundred three million, nine hundred forty thousand, seventeen".