9435421 has 2 divisors, whose sum is σ = 9435422. Its totient is φ = 9435420.

The previous prime is 9435397. The next prime is 9435467. The reversal of 9435421 is 1245349.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 3115225 = 2514^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 9435421 - 2²¹ = 7338269 is a prime.

It is a Chen prime.

9435421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9435421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9435721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4717710 + 4717711.

It is an arithmetic number, because the mean of its divisors is an integer number (4717711).

Almost surely, 2^9435421 is an apocalyptic number.

It is an amenable number.

9435421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9435421 is an equidigital number, since it uses as much as digits as its factorization.

9435421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 9435421 is about 3071.7130399827. The cubic root of 9435421 is about 211.3101837091.

It can be divided in two parts, 943 and 5421, that multiplied together give a triangular number (5112003 = T₃₁₉₇).

The spelling of 9435421 in words is "nine million, four hundred thirty-five thousand, four hundred twenty-one".