259983401 has 2 divisors, whose sum is σ = 259983402. Its totient is φ = 259983400.

The previous prime is 259983379. The next prime is 259983407. The reversal of 259983401 is 104389952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259983376 + 25 = 16124^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259983401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (259983407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129991700 + 129991701.

It is an arithmetic number, because the mean of its divisors is an integer number (129991701).

Almost surely, 2^259983401 is an apocalyptic number.

It is an amenable number.

259983401 is a deficient number, since it is larger than the sum of its proper divisors (1).

259983401 is an equidigital number, since it uses as much as digits as its factorization.

259983401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 259983401 is about 16124.0007752419. Note that the first 3 decimals coincide. The cubic root of 259983401 is about 638.2368471368.

The spelling of 259983401 in words is "two hundred fifty-nine million, nine hundred eighty-three thousand, four hundred one".