826495489 has 2 divisors, whose sum is σ = 826495490. Its totient is φ = 826495488.

The previous prime is 826495487. The next prime is 826495531. The reversal of 826495489 is 984594628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780364225 + 46131264 = 27935^2 + 6792^2 .

It is a cyclic number.

It is not a de Polignac number, because 826495489 - 2¹ = 826495487 is a prime.

Together with 826495487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (826495487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413247744 + 413247745.

It is an arithmetic number, because the mean of its divisors is an integer number (413247745).

Almost surely, 2^826495489 is an apocalyptic number.

It is an amenable number.

826495489 is a deficient number, since it is larger than the sum of its proper divisors (1).

826495489 is an equidigital number, since it uses as much as digits as its factorization.

826495489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 55.

The square root of 826495489 is about 28748.8345676829. The cubic root of 826495489 is about 938.4550935915.

The spelling of 826495489 in words is "eight hundred twenty-six million, four hundred ninety-five thousand, four hundred eighty-nine".