9705421 has 8 divisors (see below), whose sum is σ = 10613664. Its totient is φ = 8801520.

The previous prime is 9705407. The next prime is 9705427. The reversal of 9705421 is 1245079.

It is a happy number.

9705421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9705421 - 2⁵ = 9705389 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 9705421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9705427) 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, 5211 + ... + 6823.

It is an arithmetic number, because the mean of its divisors is an integer number (1326708).

Almost surely, 2^9705421 is an apocalyptic number.

It is an amenable number.

9705421 is a deficient number, since it is larger than the sum of its proper divisors (908243).

9705421 is a wasteful number, since it uses less digits than its factorization.

9705421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 9705421 is about 3115.3524680203. The cubic root of 9705421 is about 213.3068453984.

The spelling of 9705421 in words is "nine million, seven hundred five thousand, four hundred twenty-one".