927821 has 2 divisors, whose sum is σ = 927822. Its totient is φ = 927820.

The previous prime is 927803. The next prime is 927833. The reversal of 927821 is 128729.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662596 + 265225 = 814^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 927821 - 2¹⁰ = 926797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (927841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463910 + 463911.

It is an arithmetic number, because the mean of its divisors is an integer number (463911).

2⁹²⁷⁸²¹ is an apocalyptic number.

It is an amenable number.

927821 is a deficient number, since it is larger than the sum of its proper divisors (1).

927821 is an equidigital number, since it uses as much as digits as its factorization.

927821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 927821 is about 963.2346546922. The cubic root of 927821 is about 97.5337073899.

The spelling of 927821 in words is "nine hundred twenty-seven thousand, eight hundred twenty-one".