827382421 has 2 divisors, whose sum is σ = 827382422. Its totient is φ = 827382420.

The previous prime is 827382403. The next prime is 827382431. The reversal of 827382421 is 124283728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694902321 + 132480100 = 26361^2 + 11510^2 .

It is a cyclic number.

It is not a de Polignac number, because 827382421 - 2¹¹ = 827380373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827382431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413691210 + 413691211.

It is an arithmetic number, because the mean of its divisors is an integer number (413691211).

Almost surely, 2^827382421 is an apocalyptic number.

It is an amenable number.

827382421 is a deficient number, since it is larger than the sum of its proper divisors (1).

827382421 is an equidigital number, since it uses as much as digits as its factorization.

827382421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 827382421 is about 28764.2559611751. The cubic root of 827382421 is about 938.7906664227.

The spelling of 827382421 in words is "eight hundred twenty-seven million, three hundred eighty-two thousand, four hundred twenty-one".