260388291 has 4 divisors (see below), whose sum is σ = 347184392. Its totient is φ = 173592192.

The previous prime is 260388287. The next prime is 260388379. The reversal of 260388291 is 192883062.

It is a happy number.

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

It is not a de Polignac number, because 260388291 - 2² = 260388287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260388281) 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, 43398046 + ... + 43398051.

It is an arithmetic number, because the mean of its divisors is an integer number (86796098).

Almost surely, 2^260388291 is an apocalyptic number.

260388291 is a deficient number, since it is larger than the sum of its proper divisors (86796101).

260388291 is an equidigital number, since it uses as much as digits as its factorization.

260388291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86796100.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 260388291 is about 16136.5513973711. The cubic root of 260388291 is about 638.5679986417.

The spelling of 260388291 in words is "two hundred sixty million, three hundred eighty-eight thousand, two hundred ninety-one".