260193409 has 12 divisors (see below), whose sum is σ = 300260352. Its totient is φ = 220857840.

The previous prime is 260193371. The next prime is 260193419. The reversal of 260193409 is 904391062.

It is not a de Polignac number, because 260193409 - 2⁷ = 260193281 is a prime.

It is a super-2 number, since 2×260193409² = 135401220174082562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260193419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480679 + ... + 481219.

It is an arithmetic number, because the mean of its divisors is an integer number (25021696).

Almost surely, 2^260193409 is an apocalyptic number.

It is an amenable number.

260193409 is a deficient number, since it is larger than the sum of its proper divisors (40066943).

260193409 is an frugal number, since it uses more digits than its factorization.

260193409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 260193409 is about 16130.5117401774. The cubic root of 260193409 is about 638.4086514001.

The spelling of 260193409 in words is "two hundred sixty million, one hundred ninety-three thousand, four hundred nine".