260133409 has 2 divisors, whose sum is σ = 260133410. Its totient is φ = 260133408.

The previous prime is 260133373. The next prime is 260133413. The reversal of 260133409 is 904331062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260112384 + 21025 = 16128^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 260133409 - 2⁷ = 260133281 is a prime.

It is a super-2 number, since 2×260133409² = 135338780955922562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260133449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130066704 + 130066705.

It is an arithmetic number, because the mean of its divisors is an integer number (130066705).

Almost surely, 2^260133409 is an apocalyptic number.

It is an amenable number.

260133409 is a deficient number, since it is larger than the sum of its proper divisors (1).

260133409 is an equidigital number, since it uses as much as digits as its factorization.

260133409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 260133409 is about 16128.6518035451. The cubic root of 260133409 is about 638.3595757734.

The spelling of 260133409 in words is "two hundred sixty million, one hundred thirty-three thousand, four hundred nine".