870282991 has 2 divisors, whose sum is σ = 870282992. Its totient is φ = 870282990.

The previous prime is 870282967. The next prime is 870283019. The reversal of 870282991 is 199282078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870282991 - 2²¹ = 868185839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870282961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435141495 + 435141496.

It is an arithmetic number, because the mean of its divisors is an integer number (435141496).

Almost surely, 2^870282991 is an apocalyptic number.

870282991 is a deficient number, since it is larger than the sum of its proper divisors (1).

870282991 is an equidigital number, since it uses as much as digits as its factorization.

870282991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 870282991 is about 29500.5591641921. The cubic root of 870282991 is about 954.7437672266.

The spelling of 870282991 in words is "eight hundred seventy million, two hundred eighty-two thousand, nine hundred ninety-one".