523490069 has 2 divisors, whose sum is σ = 523490070. Its totient is φ = 523490068.

The previous prime is 523490039. The next prime is 523490083. The reversal of 523490069 is 960094325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522671044 + 819025 = 22862^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 523490069 - 2¹² = 523485973 is a prime.

It is a super-2 number, since 2×523490069² = 548083704683249522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523490039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261745034 + 261745035.

It is an arithmetic number, because the mean of its divisors is an integer number (261745035).

Almost surely, 2^523490069 is an apocalyptic number.

It is an amenable number.

523490069 is a deficient number, since it is larger than the sum of its proper divisors (1).

523490069 is an equidigital number, since it uses as much as digits as its factorization.

523490069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 523490069 is about 22879.9053538252. The cubic root of 523490069 is about 805.9401943815.

The spelling of 523490069 in words is "five hundred twenty-three million, four hundred ninety thousand, sixty-nine".