503209940 has 12 divisors (see below), whose sum is σ = 1056740916. Its totient is φ = 201283968.

The previous prime is 503209913. The next prime is 503209957. The reversal of 503209940 is 49902305.

It can be written as a sum of positive squares in 2 ways, for example, as 296252944 + 206956996 = 17212^2 + 14386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 503209897 and 503209906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12580229 + ... + 12580268.

It is an arithmetic number, because the mean of its divisors is an integer number (88061743).

Almost surely, 2^503209940 is an apocalyptic number.

It is an amenable number.

503209940 is an abundant number, since it is smaller than the sum of its proper divisors (553530976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503209940 is a wasteful number, since it uses less digits than its factorization.

503209940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25160506 (or 25160504 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 503209940 is about 22432.3413847061. The cubic root of 503209940 is about 795.3953915749.

The spelling of 503209940 in words is "five hundred three million, two hundred nine thousand, nine hundred forty".