885421 has 2 divisors, whose sum is σ = 885422. Its totient is φ = 885420.

The previous prime is 885403. The next prime is 885427. The reversal of 885421 is 124588.

885421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 171396 = 845^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 885421 - 2⁵ = 885389 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 885421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (885427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442710 + 442711.

It is an arithmetic number, because the mean of its divisors is an integer number (442711).

2⁸⁸⁵⁴²¹ is an apocalyptic number.

It is an amenable number.

885421 is a deficient number, since it is larger than the sum of its proper divisors (1).

885421 is an equidigital number, since it uses as much as digits as its factorization.

885421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 28.

The square root of 885421 is about 940.9681184822. The cubic root of 885421 is about 96.0247693609.

The spelling of 885421 in words is "eight hundred eighty-five thousand, four hundred twenty-one".