259399823 has 2 divisors, whose sum is σ = 259399824. Its totient is φ = 259399822.

The previous prime is 259399807. The next prime is 259399841. The reversal of 259399823 is 328993952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259399823 - 2⁴ = 259399807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259399843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129699911 + 129699912.

It is an arithmetic number, because the mean of its divisors is an integer number (129699912).

Almost surely, 2^259399823 is an apocalyptic number.

259399823 is a deficient number, since it is larger than the sum of its proper divisors (1).

259399823 is an equidigital number, since it uses as much as digits as its factorization.

259399823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 50.

The square root of 259399823 is about 16105.8940453487. The cubic root of 259399823 is about 637.7589448119.

The spelling of 259399823 in words is "two hundred fifty-nine million, three hundred ninety-nine thousand, eight hundred twenty-three".