9689421 has 16 divisors (see below), whose sum is σ = 14816384. Its totient is φ = 5517504.

The previous prime is 9689419. The next prime is 9689437. The reversal of 9689421 is 1249869.

It is not a de Polignac number, because 9689421 - 2¹ = 9689419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9689421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9689401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7215 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (926024).

Almost surely, 2^9689421 is an apocalyptic number.

It is an amenable number.

9689421 is a deficient number, since it is larger than the sum of its proper divisors (5126963).

9689421 is a wasteful number, since it uses less digits than its factorization.

9689421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its digits is 31104, while the sum is 39.

The square root of 9689421 is about 3112.7834810664. The cubic root of 9689421 is about 213.1895643204.

The spelling of 9689421 in words is "nine million, six hundred eighty-nine thousand, four hundred twenty-one".