86810889 has 16 divisors (see below), whose sum is σ = 128413440. Its totient is φ = 51719760.

The previous prime is 86810887. The next prime is 86810897. The reversal of 86810889 is 98801868.

It is not a de Polignac number, because 86810889 - 2¹ = 86810887 is a prime.

It is a super-2 number, since 2×86810889² = 15072260897940642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86810887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20347 + ... + 24240.

It is an arithmetic number, because the mean of its divisors is an integer number (8025840).

Almost surely, 2^86810889 is an apocalyptic number.

It is an amenable number.

86810889 is a deficient number, since it is larger than the sum of its proper divisors (41602551).

86810889 is a wasteful number, since it uses less digits than its factorization.

86810889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44660.

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 86810889 is about 9317.2361245168. The cubic root of 86810889 is about 442.7834718491.

The spelling of 86810889 in words is "eighty-six million, eight hundred ten thousand, eight hundred eighty-nine".