89399181 has 8 divisors (see below), whose sum is σ = 121448160. Its totient is φ = 58474832.

The previous prime is 89399173. The next prime is 89399197. The reversal of 89399181 is 18199398.

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 89399181 - 2³ = 89399173 is a prime.

It is a super-2 number, since 2×89399181² = 15984427126941522, 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 89399181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89399171) 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, 280971 + ... + 281288.

It is an arithmetic number, because the mean of its divisors is an integer number (15181020).

Almost surely, 2^89399181 is an apocalyptic number.

It is an amenable number.

89399181 is a deficient number, since it is larger than the sum of its proper divisors (32048979).

89399181 is a wasteful number, since it uses less digits than its factorization.

89399181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562315.

The product of its digits is 139968, while the sum is 48.

The square root of 89399181 is about 9455.1140130619. The cubic root of 89399181 is about 447.1410202229.

The spelling of 89399181 in words is "eighty-nine million, three hundred ninety-nine thousand, one hundred eighty-one".