523960993 has 2 divisors, whose sum is σ = 523960994. Its totient is φ = 523960992.

The previous prime is 523960973. The next prime is 523961027. The reversal of 523960993 is 399069325.

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., 514019584 + 9941409 = 22672^2 + 3153^2 .

It is a cyclic number.

It is not a de Polignac number, because 523960993 - 2¹⁷ = 523829921 is a prime.

It is equal to p_27549883 and since 523960993 and 27549883 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (523960973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261980496 + 261980497.

It is an arithmetic number, because the mean of its divisors is an integer number (261980497).

Almost surely, 2^523960993 is an apocalyptic number.

It is an amenable number.

523960993 is a deficient number, since it is larger than the sum of its proper divisors (1).

523960993 is an equidigital number, since it uses as much as digits as its factorization.

523960993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 46.

The square root of 523960993 is about 22890.1942543090. The cubic root of 523960993 is about 806.1817926154.

The spelling of 523960993 in words is "five hundred twenty-three million, nine hundred sixty thousand, nine hundred ninety-three".