523722869 has 2 divisors, whose sum is σ = 523722870. Its totient is φ = 523722868.

The previous prime is 523722863. The next prime is 523722883. The reversal of 523722869 is 968227325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325983025 + 197739844 = 18055^2 + 14062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523722869 is a prime.

It is a super-2 number, since 2×523722869² = 548571287027182322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523722863) 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, 261861434 + 261861435.

It is an arithmetic number, because the mean of its divisors is an integer number (261861435).

Almost surely, 2^523722869 is an apocalyptic number.

It is an amenable number.

523722869 is a deficient number, since it is larger than the sum of its proper divisors (1).

523722869 is an equidigital number, since it uses as much as digits as its factorization.

523722869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 523722869 is about 22884.9922219781. The cubic root of 523722869 is about 806.0596459132.

The spelling of 523722869 in words is "five hundred twenty-three million, seven hundred twenty-two thousand, eight hundred sixty-nine".