523939873 has 2 divisors, whose sum is σ = 523939874. Its totient is φ = 523939872.

The previous prime is 523939859. The next prime is 523939891. The reversal of 523939873 is 378939325.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357323409 + 166616464 = 18903^2 + 12908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523939873 is a prime.

It is a super-2 number, since 2×523939873² = 549025981038512258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (523939673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261969936 + 261969937.

It is an arithmetic number, because the mean of its divisors is an integer number (261969937).

Almost surely, 2^523939873 is an apocalyptic number.

It is an amenable number.

523939873 is a deficient number, since it is larger than the sum of its proper divisors (1).

523939873 is an equidigital number, since it uses as much as digits as its factorization.

523939873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 523939873 is about 22889.7329167468. The cubic root of 523939873 is about 806.1709605189.

The spelling of 523939873 in words is "five hundred twenty-three million, nine hundred thirty-nine thousand, eight hundred seventy-three".