506847749 has 2 divisors, whose sum is σ = 506847750. Its totient is φ = 506847748.

The previous prime is 506847739. The next prime is 506847853. The reversal of 506847749 is 947748605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388799524 + 118048225 = 19718^2 + 10865^2 .

It is a cyclic number.

It is not a de Polignac number, because 506847749 - 2²⁴ = 490070533 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 506847697 and 506847706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506847739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253423874 + 253423875.

It is an arithmetic number, because the mean of its divisors is an integer number (253423875).

Almost surely, 2^506847749 is an apocalyptic number.

It is an amenable number.

506847749 is a deficient number, since it is larger than the sum of its proper divisors (1).

506847749 is an equidigital number, since it uses as much as digits as its factorization.

506847749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 506847749 is about 22513.2793923942. The cubic root of 506847749 is about 797.3074840514.

The spelling of 506847749 in words is "five hundred six million, eight hundred forty-seven thousand, seven hundred forty-nine".