506839969 has 2 divisors, whose sum is σ = 506839970. Its totient is φ = 506839968.

The previous prime is 506839951. The next prime is 506839973. The reversal of 506839969 is 969938605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348382225 + 158457744 = 18665^2 + 12588^2 .

It is a cyclic number.

It is not a de Polignac number, because 506839969 - 2⁹ = 506839457 is a prime.

It is a super-2 number, since 2×506839969² = 513773508351841922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (506839999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253419984 + 253419985.

It is an arithmetic number, because the mean of its divisors is an integer number (253419985).

Almost surely, 2^506839969 is an apocalyptic number.

It is an amenable number.

506839969 is a deficient number, since it is larger than the sum of its proper divisors (1).

506839969 is an equidigital number, since it uses as much as digits as its factorization.

506839969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 506839969 is about 22513.1066048202. The cubic root of 506839969 is about 797.3034045331.

The spelling of 506839969 in words is "five hundred six million, eight hundred thirty-nine thousand, nine hundred sixty-nine".