260434304989 has 4 divisors (see below), whose sum is σ = 260435509180. Its totient is φ = 260433100800.

The previous prime is 260434304981. The next prime is 260434305101. The reversal of 260434304989 is 989403434062.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 186379568089 + 74054736900 = 431717^2 + 272130^2 .

It is a cyclic number.

It is not a de Polignac number, because 260434304989 - 2³ = 260434304981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260434304981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178212 + ... + 743389.

It is an arithmetic number, because the mean of its divisors is an integer number (65108877295).

Almost surely, 2^260434304989 is an apocalyptic number.

It is an amenable number.

260434304989 is a deficient number, since it is larger than the sum of its proper divisors (1204191).

260434304989 is an equidigital number, since it uses as much as digits as its factorization.

260434304989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204190.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 260434304989 in words is "two hundred sixty billion, four hundred thirty-four million, three hundred four thousand, nine hundred eighty-nine".