259200989 has 4 divisors (see below), whose sum is σ = 274448124. Its totient is φ = 243953856.

The previous prime is 259200941. The next prime is 259201009. The reversal of 259200989 is 989002952.

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 92352100 + 166848889 = 9610^2 + 12917^2 .

It is a cyclic number.

It is not a de Polignac number, because 259200989 - 2¹² = 259196893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259200919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7623542 + ... + 7623575.

It is an arithmetic number, because the mean of its divisors is an integer number (68612031).

Almost surely, 2^259200989 is an apocalyptic number.

It is an amenable number.

259200989 is a deficient number, since it is larger than the sum of its proper divisors (15247135).

259200989 is a wasteful number, since it uses less digits than its factorization.

259200989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15247134.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 259200989 is about 16099.7201528474. The cubic root of 259200989 is about 637.5959524417.

The spelling of 259200989 in words is "two hundred fifty-nine million, two hundred thousand, nine hundred eighty-nine".