259801879 has 2 divisors, whose sum is σ = 259801880. Its totient is φ = 259801878.

The previous prime is 259801831. The next prime is 259801889. The reversal of 259801879 is 978108952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259801879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259801889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129900939 + 129900940.

It is an arithmetic number, because the mean of its divisors is an integer number (129900940).

Almost surely, 2^259801879 is an apocalyptic number.

259801879 is a deficient number, since it is larger than the sum of its proper divisors (1).

259801879 is an equidigital number, since it uses as much as digits as its factorization.

259801879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 259801879 is about 16118.3708544009. The cubic root of 259801879 is about 638.0882722633.

The spelling of 259801879 in words is "two hundred fifty-nine million, eight hundred one thousand, eight hundred seventy-nine".