880421 has 2 divisors, whose sum is σ = 880422. Its totient is φ = 880420.

The previous prime is 880409. The next prime is 880423. The reversal of 880421 is 124088.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 264196 = 785^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 880421 - 2¹⁴ = 864037 is a prime.

It is a super-2 number, since 2×880421² = 1550282274482, which contains 22 as substring.

Together with 880423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440210 + 440211.

It is an arithmetic number, because the mean of its divisors is an integer number (440211).

2⁸⁸⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

880421 is a deficient number, since it is larger than the sum of its proper divisors (1).

880421 is an equidigital number, since it uses as much as digits as its factorization.

880421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 880421 is about 938.3075188871. The cubic root of 880421 is about 95.8436764304.

The spelling of 880421 in words is "eight hundred eighty thousand, four hundred twenty-one".