89189144 has 32 divisors (see below), whose sum is σ = 184645440. Its totient is φ = 40048800.

The previous prime is 89189143. The next prime is 89189153. The reversal of 89189144 is 44198198.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 89189095 and 89189104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89189143) 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, 1199 + ... + 13409.

It is an arithmetic number, because the mean of its divisors is an integer number (5770170).

Almost surely, 2^89189144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89189144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92322720).

89189144 is an abundant number, since it is smaller than the sum of its proper divisors (95456296).

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

89189144 is a wasteful number, since it uses less digits than its factorization.

89189144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12311 (or 12307 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 89189144 is about 9444.0004235493. Note that the first 3 decimals coincide. The cubic root of 89189144 is about 446.7905703144.

The spelling of 89189144 in words is "eighty-nine million, one hundred eighty-nine thousand, one hundred forty-four".