86945559 has 4 divisors (see below), whose sum is σ = 115927416. Its totient is φ = 57963704.

The previous prime is 86945549. The next prime is 86945563. The reversal of 86945559 is 95554968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86945559 - 2¹⁶ = 86880023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86945519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14490924 + ... + 14490929.

It is an arithmetic number, because the mean of its divisors is an integer number (28981854).

Almost surely, 2^86945559 is an apocalyptic number.

86945559 is a deficient number, since it is larger than the sum of its proper divisors (28981857).

86945559 is a wasteful number, since it uses less digits than its factorization.

86945559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28981856.

The product of its digits is 1944000, while the sum is 51.

The square root of 86945559 is about 9324.4602524757. The cubic root of 86945559 is about 443.0123173424.

The spelling of 86945559 in words is "eighty-six million, nine hundred forty-five thousand, five hundred fifty-nine".