503999950 has 24 divisors (see below), whose sum is σ = 943745400. Its totient is φ = 200244000.

The previous prime is 503999939. The next prime is 503999971. The reversal of 503999950 is 59999305.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 503999894 and 503999903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26376 + ... + 41275.

It is an arithmetic number, because the mean of its divisors is an integer number (39322725).

Almost surely, 2^503999950 is an apocalyptic number.

503999950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

503999950 is a deficient number, since it is larger than the sum of its proper divisors (439745450).

503999950 is a wasteful number, since it uses less digits than its factorization.

503999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67812 (or 67807 counting only the distinct ones).

The product of its (nonzero) digits is 492075, while the sum is 49.

The square root of 503999950 is about 22449.9432070551. The cubic root of 503999950 is about 795.8114152628.

It can be divided in two parts, 50 and 3999950, that added together give a square (4000000 = 2000²).

The spelling of 503999950 in words is "five hundred three million, nine hundred ninety-nine thousand, nine hundred fifty".