421313617 has 8 divisors (see below), whose sum is σ = 423960992. Its totient is φ = 418672800.

The previous prime is 421313611. The next prime is 421313713. The reversal of 421313617 is 716313124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421313617 - 2⁷ = 421313489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421313611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196642 + ... + 198772.

It is an arithmetic number, because the mean of its divisors is an integer number (52995124).

Almost surely, 2^421313617 is an apocalyptic number.

It is an amenable number.

421313617 is a deficient number, since it is larger than the sum of its proper divisors (2647375).

421313617 is a wasteful number, since it uses less digits than its factorization.

421313617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279.

The product of its digits is 3024, while the sum is 28.

The square root of 421313617 is about 20525.9254846158. The cubic root of 421313617 is about 749.6671809231.

The spelling of 421313617 in words is "four hundred twenty-one million, three hundred thirteen thousand, six hundred seventeen".