86989144 has 32 divisors (see below), whose sum is σ = 187300800. Its totient is φ = 37458720.

The previous prime is 86989139. The next prime is 86989157. The reversal of 86989144 is 44198968.

It is a super-2 number, since 2×86989144² = 15134222347705472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24342 + ... + 27685.

It is an arithmetic number, because the mean of its divisors is an integer number (5853150).

Almost surely, 2^86989144 is an apocalyptic number.

It is an amenable number.

86989144 is an abundant number, since it is smaller than the sum of its proper divisors (100311656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86989144 is a wasteful number, since it uses less digits than its factorization.

86989144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52063 (or 52059 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 86989144 is about 9326.7970922498. The cubic root of 86989144 is about 443.0863309610.

The spelling of 86989144 in words is "eighty-six million, nine hundred eighty-nine thousand, one hundred forty-four".