259802849 has 4 divisors (see below), whose sum is σ = 259839636. Its totient is φ = 259766064.

The previous prime is 259802831. The next prime is 259802911. The reversal of 259802849 is 948208952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85747600 + 174055249 = 9260^2 + 13193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259802849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259802819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094 + ... + 23159.

It is an arithmetic number, because the mean of its divisors is an integer number (64959909).

Almost surely, 2^259802849 is an apocalyptic number.

It is an amenable number.

259802849 is a deficient number, since it is larger than the sum of its proper divisors (36787).

259802849 is an equidigital number, since it uses as much as digits as its factorization.

259802849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36786.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 259802849 is about 16118.4009442624. The cubic root of 259802849 is about 638.0890663875.

The spelling of 259802849 in words is "two hundred fifty-nine million, eight hundred two thousand, eight hundred forty-nine".