260045389 has 2 divisors, whose sum is σ = 260045390. Its totient is φ = 260045388.

The previous prime is 260045371. The next prime is 260045393. The reversal of 260045389 is 983540062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150675625 + 109369764 = 12275^2 + 10458^2 .

It is a cyclic number.

It is not a de Polignac number, because 260045389 - 2²⁷ = 125827661 is a prime.

It is a super-2 number, since 2×260045389² = 135247208680322642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260045309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130022694 + 130022695.

It is an arithmetic number, because the mean of its divisors is an integer number (130022695).

Almost surely, 2^260045389 is an apocalyptic number.

It is an amenable number.

260045389 is a deficient number, since it is larger than the sum of its proper divisors (1).

260045389 is an equidigital number, since it uses as much as digits as its factorization.

260045389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 260045389 is about 16125.9228883187. The cubic root of 260045389 is about 638.2875681721.

The spelling of 260045389 in words is "two hundred sixty million, forty-five thousand, three hundred eighty-nine".