9523421 has 2 divisors, whose sum is σ = 9523422. Its totient is φ = 9523420.

The previous prime is 9523399. The next prime is 9523429. The reversal of 9523421 is 1243259.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9523396 + 25 = 3086^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 9523421 - 2¹⁴ = 9507037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9523429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4761710 + 4761711.

It is an arithmetic number, because the mean of its divisors is an integer number (4761711).

Almost surely, 2^9523421 is an apocalyptic number.

It is an amenable number.

9523421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9523421 is an equidigital number, since it uses as much as digits as its factorization.

9523421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 9523421 is about 3086.0040505482. The cubic root of 9523421 is about 211.9650841394.

It can be divided in two parts, 95 and 23421, that multiplied together give a triangular number (2224995 = T₂₁₀₉).

The spelling of 9523421 in words is "nine million, five hundred twenty-three thousand, four hundred twenty-one".