503249849 has 4 divisors (see below), whose sum is σ = 503749620. Its totient is φ = 502750080.

The previous prime is 503249843. The next prime is 503249869. The reversal of 503249849 is 948942305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948942305 = 5 ⋅189788461.

It can be written as a sum of positive squares in 2 ways, for example, as 149621824 + 353628025 = 12232^2 + 18805^2 .

It is a cyclic number.

It is not a de Polignac number, because 503249849 - 2¹² = 503245753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (503249843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248372 + ... + 250389.

It is an arithmetic number, because the mean of its divisors is an integer number (125937405).

Almost surely, 2^503249849 is an apocalyptic number.

It is an amenable number.

503249849 is a deficient number, since it is larger than the sum of its proper divisors (499771).

503249849 is a wasteful number, since it uses less digits than its factorization.

503249849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499770.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 503249849 is about 22433.2309086320. The cubic root of 503249849 is about 795.4164183161.

The spelling of 503249849 in words is "five hundred three million, two hundred forty-nine thousand, eight hundred forty-nine".