260926889 has 4 divisors (see below), whose sum is σ = 261295620. Its totient is φ = 260558160.

The previous prime is 260926847. The next prime is 260926903. The reversal of 260926889 is 988629062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988629062 = 2 ⋅494314531.

It can be written as a sum of positive squares in 2 ways, for example, as 55950400 + 204976489 = 7480^2 + 14317^2 .

It is a cyclic number.

It is not a de Polignac number, because 260926889 - 2²⁴ = 244149673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260920889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183302 + ... + 184719.

It is an arithmetic number, because the mean of its divisors is an integer number (65323905).

Almost surely, 2^260926889 is an apocalyptic number.

It is an amenable number.

260926889 is a deficient number, since it is larger than the sum of its proper divisors (368731).

260926889 is an equidigital number, since it uses as much as digits as its factorization.

260926889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368730.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 260926889 is about 16153.2315342782. The cubic root of 260926889 is about 639.0079756516.

The spelling of 260926889 in words is "two hundred sixty million, nine hundred twenty-six thousand, eight hundred eighty-nine".