89181329 has 4 divisors (see below), whose sum is σ = 90643380. Its totient is φ = 87719280.

The previous prime is 89181317. The next prime is 89181341. The reversal of 89181329 is 92318198.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (89181317) and next prime (89181341).

It can be written as a sum of positive squares in 2 ways, for example, as 34199104 + 54982225 = 5848^2 + 7415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89181329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89181349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730934 + ... + 731055.

It is an arithmetic number, because the mean of its divisors is an integer number (22660845).

Almost surely, 2^89181329 is an apocalyptic number.

It is an amenable number.

89181329 is a deficient number, since it is larger than the sum of its proper divisors (1462051).

89181329 is a wasteful number, since it uses less digits than its factorization.

89181329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462050.

The product of its digits is 31104, while the sum is 41.

The square root of 89181329 is about 9443.5866597390. The cubic root of 89181329 is about 446.7775202572. Note that the first 3 decimals are identical.

The spelling of 89181329 in words is "eighty-nine million, one hundred eighty-one thousand, three hundred twenty-nine".