411428821 has 2 divisors, whose sum is σ = 411428822. Its totient is φ = 411428820.

The previous prime is 411428791. The next prime is 411428827. The reversal of 411428821 is 128824114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389470225 + 21958596 = 19735^2 + 4686^2 .

It is a cyclic number.

It is not a de Polignac number, because 411428821 - 2⁹ = 411428309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (411428827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205714410 + 205714411.

It is an arithmetic number, because the mean of its divisors is an integer number (205714411).

Almost surely, 2^411428821 is an apocalyptic number.

It is an amenable number.

411428821 is a deficient number, since it is larger than the sum of its proper divisors (1).

411428821 is an equidigital number, since it uses as much as digits as its factorization.

411428821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4096, while the sum is 31.

The square root of 411428821 is about 20283.7082655021. The cubic root of 411428821 is about 743.7578634764.

The spelling of 411428821 in words is "four hundred eleven million, four hundred twenty-eight thousand, eight hundred twenty-one".