827149487 has 2 divisors, whose sum is σ = 827149488. Its totient is φ = 827149486.

The previous prime is 827149469. The next prime is 827149489. The reversal of 827149487 is 784941728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 827149487 - 2⁸ = 827149231 is a prime.

Together with 827149489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827149489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413574743 + 413574744.

It is an arithmetic number, because the mean of its divisors is an integer number (413574744).

Almost surely, 2^827149487 is an apocalyptic number.

827149487 is a deficient number, since it is larger than the sum of its proper divisors (1).

827149487 is an equidigital number, since it uses as much as digits as its factorization.

827149487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 50.

The square root of 827149487 is about 28760.2066578111. The cubic root of 827149487 is about 938.7025585199.

The spelling of 827149487 in words is "eight hundred twenty-seven million, one hundred forty-nine thousand, four hundred eighty-seven".