260431409 has 4 divisors (see below), whose sum is σ = 297635904. Its totient is φ = 223226916.

The previous prime is 260431393. The next prime is 260431417. The reversal of 260431409 is 904134062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 260431409 - 2⁴ = 260431393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260431459) 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, 18602237 + ... + 18602250.

It is an arithmetic number, because the mean of its divisors is an integer number (74408976).

Almost surely, 2^260431409 is an apocalyptic number.

It is an amenable number.

260431409 is a deficient number, since it is larger than the sum of its proper divisors (37204495).

260431409 is an equidigital number, since it uses as much as digits as its factorization.

260431409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37204494.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 260431409 is about 16137.8873772251. The cubic root of 260431409 is about 638.6032437689.

The spelling of 260431409 in words is "two hundred sixty million, four hundred thirty-one thousand, four hundred nine".