9084421 has 2 divisors, whose sum is σ = 9084422. Its totient is φ = 9084420.

The previous prime is 9084419. The next prime is 9084431. The reversal of 9084421 is 1244809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9084196 + 225 = 3014^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 9084421 - 2¹ = 9084419 is a prime.

Together with 9084419, it forms a pair of twin primes.

It is a Chen prime.

9084421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9084421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9084401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4542210 + 4542211.

It is an arithmetic number, because the mean of its divisors is an integer number (4542211).

Almost surely, 2^9084421 is an apocalyptic number.

It is an amenable number.

9084421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9084421 is an equidigital number, since it uses as much as digits as its factorization.

9084421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 9084421 is about 3014.0373255818. The cubic root of 9084421 is about 208.6567398685.

It can be divided in two parts, 908 and 4421, that added together give a square (5329 = 73²).

The spelling of 9084421 in words is "nine million, eighty-four thousand, four hundred twenty-one".