260421447 has 16 divisors (see below), whose sum is σ = 407933568. Its totient is φ = 145690080.

The previous prime is 260421443. The next prime is 260421461. The reversal of 260421447 is 744124062.

It is not a de Polignac number, because 260421447 - 2² = 260421443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260421443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303093 + ... + 303950.

It is an arithmetic number, because the mean of its divisors is an integer number (25495848).

Almost surely, 2^260421447 is an apocalyptic number.

260421447 is a deficient number, since it is larger than the sum of its proper divisors (147512121).

260421447 is a wasteful number, since it uses less digits than its factorization.

260421447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607070.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 260421447 is about 16137.5787217290. The cubic root of 260421447 is about 638.5951010662.

The spelling of 260421447 in words is "two hundred sixty million, four hundred twenty-one thousand, four hundred forty-seven".