260780039 has 4 divisors (see below), whose sum is σ = 280840056. Its totient is φ = 240720024.

The previous prime is 260780021. The next prime is 260780071. The reversal of 260780039 is 930087062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260780039 - 2²⁴ = 244002823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260779990 and 260780008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260780239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10029989 + ... + 10030014.

It is an arithmetic number, because the mean of its divisors is an integer number (70210014).

Almost surely, 2^260780039 is an apocalyptic number.

260780039 is a deficient number, since it is larger than the sum of its proper divisors (20060017).

260780039 is a wasteful number, since it uses less digits than its factorization.

260780039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060016.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 260780039 is about 16148.6853644499. The cubic root of 260780039 is about 638.8880749759. Note that the first 3 decimals are identical.

The spelling of 260780039 in words is "two hundred sixty million, seven hundred eighty thousand, thirty-nine".