506396843 has 2 divisors, whose sum is σ = 506396844. Its totient is φ = 506396842.

The previous prime is 506396809. The next prime is 506396857. The reversal of 506396843 is 348693605.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506396843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 506396794 and 506396803.

It is not a weakly prime, because it can be changed into another prime (506399843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253198421 + 253198422.

It is an arithmetic number, because the mean of its divisors is an integer number (253198422).

Almost surely, 2^506396843 is an apocalyptic number.

506396843 is the 12029-th centered heptagonal number.

506396843 is a deficient number, since it is larger than the sum of its proper divisors (1).

506396843 is an equidigital number, since it uses as much as digits as its factorization.

506396843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 506396843 is about 22503.2629411826. The cubic root of 506396843 is about 797.0709781893.

The spelling of 506396843 in words is "five hundred six million, three hundred ninety-six thousand, eight hundred forty-three".