89185881 has 8 divisors (see below), whose sum is σ = 124084800. Its totient is φ = 56872112.

The previous prime is 89185841. The next prime is 89185883. The reversal of 89185881 is 18858198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89185881 - 2¹⁰ = 89184857 is a prime.

It is a super-2 number, since 2×89185881² = 15908242739492322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89185881.

It is not an unprimeable number, because it can be changed into a prime (89185883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646206 + ... + 646343.

It is an arithmetic number, because the mean of its divisors is an integer number (15510600).

Almost surely, 2^89185881 is an apocalyptic number.

It is an amenable number.

89185881 is a deficient number, since it is larger than the sum of its proper divisors (34898919).

89185881 is a wasteful number, since it uses less digits than its factorization.

89185881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292575.

The product of its digits is 184320, while the sum is 48.

The square root of 89185881 is about 9443.8276667885. The cubic root of 89185881 is about 446.7851216116.

The spelling of 89185881 in words is "eighty-nine million, one hundred eighty-five thousand, eight hundred eighty-one".