503397009 has 6 divisors (see below), whose sum is σ = 727129026. Its totient is φ = 335598000.

The previous prime is 503397007. The next prime is 503397017. The reversal of 503397009 is 900793305.

It can be written as a sum of positive squares in only one way, i.e., 315843984 + 187553025 = 17772^2 + 13695^2 .

It is not a de Polignac number, because 503397009 - 2¹ = 503397007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503397007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27966492 + ... + 27966509.

It is an arithmetic number, because the mean of its divisors is an integer number (121188171).

Almost surely, 2^503397009 is an apocalyptic number.

It is an amenable number.

503397009 is a deficient number, since it is larger than the sum of its proper divisors (223732017).

503397009 is a wasteful number, since it uses less digits than its factorization.

503397009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55933007 (or 55933004 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 36.

The square root of 503397009 is about 22436.5106244264. The cubic root of 503397009 is about 795.4939424807.

The spelling of 503397009 in words is "five hundred three million, three hundred ninety-seven thousand, nine".