86889571 has 2 divisors, whose sum is σ = 86889572. Its totient is φ = 86889570.

The previous prime is 86889563. The next prime is 86889581. The reversal of 86889571 is 17598868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86889571 - 2³ = 86889563 is a prime.

It is not a weakly prime, because it can be changed into another prime (86889521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43444785 + 43444786.

It is an arithmetic number, because the mean of its divisors is an integer number (43444786).

Almost surely, 2^86889571 is an apocalyptic number.

86889571 is a deficient number, since it is larger than the sum of its proper divisors (1).

86889571 is an equidigital number, since it uses as much as digits as its factorization.

86889571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 52.

The square root of 86889571 is about 9321.4575576999. The cubic root of 86889571 is about 442.9172053366.

The spelling of 86889571 in words is "eighty-six million, eight hundred eighty-nine thousand, five hundred seventy-one".