260088889 has 2 divisors, whose sum is σ = 260088890. Its totient is φ = 260088888.

The previous prime is 260088809. The next prime is 260088911. The reversal of 260088889 is 988880062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253287225 + 6801664 = 15915^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 260088889 - 2⁹ = 260088377 is a prime.

It is not a weakly prime, because it can be changed into another prime (260088809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130044444 + 130044445.

It is an arithmetic number, because the mean of its divisors is an integer number (130044445).

Almost surely, 2^260088889 is an apocalyptic number.

It is an amenable number.

260088889 is a deficient number, since it is larger than the sum of its proper divisors (1).

260088889 is an equidigital number, since it uses as much as digits as its factorization.

260088889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 260088889 is about 16127.2715919340. The cubic root of 260088889 is about 638.3231567813.

The spelling of 260088889 in words is "two hundred sixty million, eighty-eight thousand, eight hundred eighty-nine".