870027091 has 2 divisors, whose sum is σ = 870027092. Its totient is φ = 870027090.

The previous prime is 870027077. The next prime is 870027097. The reversal of 870027091 is 190720078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870027091 - 2²⁷ = 735809363 is a prime.

It is not a weakly prime, because it can be changed into another prime (870027097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435013545 + 435013546.

It is an arithmetic number, because the mean of its divisors is an integer number (435013546).

Almost surely, 2^870027091 is an apocalyptic number.

870027091 is a deficient number, since it is larger than the sum of its proper divisors (1).

870027091 is an equidigital number, since it uses as much as digits as its factorization.

870027091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 870027091 is about 29496.2216393897. The cubic root of 870027091 is about 954.6501797066.

The spelling of 870027091 in words is "eight hundred seventy million, twenty-seven thousand, ninety-one".