827138479 has 2 divisors, whose sum is σ = 827138480. Its totient is φ = 827138478.

The previous prime is 827138471. The next prime is 827138483. The reversal of 827138479 is 974831728.

827138479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 827138479 - 2³ = 827138471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827138471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413569239 + 413569240.

It is an arithmetic number, because the mean of its divisors is an integer number (413569240).

Almost surely, 2^827138479 is an apocalyptic number.

827138479 is a deficient number, since it is larger than the sum of its proper divisors (1).

827138479 is an equidigital number, since it uses as much as digits as its factorization.

827138479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 827138479 is about 28760.0152816371. The cubic root of 827138479 is about 938.6983943055.

The spelling of 827138479 in words is "eight hundred twenty-seven million, one hundred thirty-eight thousand, four hundred seventy-nine".