506944813 has 4 divisors (see below), whose sum is σ = 507022048. Its totient is φ = 506867580.

The previous prime is 506944793. The next prime is 506944849. The reversal of 506944813 is 318449605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506944813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506944873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27753 + ... + 42238.

It is an arithmetic number, because the mean of its divisors is an integer number (126755512).

Almost surely, 2^506944813 is an apocalyptic number.

It is an amenable number.

506944813 is a deficient number, since it is larger than the sum of its proper divisors (77235).

506944813 is an equidigital number, since it uses as much as digits as its factorization.

506944813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77234.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 506944813 is about 22515.4349946875. The cubic root of 506944813 is about 797.3583769899.

The spelling of 506944813 in words is "five hundred six million, nine hundred forty-four thousand, eight hundred thirteen".