503999949 has 8 divisors (see below), whose sum is σ = 684679392. Its totient is φ = 329660240.

The previous prime is 503999939. The next prime is 503999971. The reversal of 503999949 is 949999305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503999949 - 2¹² = 503995853 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503999939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584747 + ... + 1585064.

It is an arithmetic number, because the mean of its divisors is an integer number (85584924).

Almost surely, 2^503999949 is an apocalyptic number.

It is an amenable number.

503999949 is a deficient number, since it is larger than the sum of its proper divisors (180679443).

503999949 is a wasteful number, since it uses less digits than its factorization.

503999949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169867.

The product of its (nonzero) digits is 3542940, while the sum is 57.

The square root of 503999949 is about 22449.9431847833. The cubic root of 503999949 is about 795.8114147364.

The spelling of 503999949 in words is "five hundred three million, nine hundred ninety-nine thousand, nine hundred forty-nine".