89321387 has 4 divisors (see below), whose sum is σ = 89351256. Its totient is φ = 89291520.

The previous prime is 89321381. The next prime is 89321437. The reversal of 89321387 is 78312398.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78312398 = 2 ⋅39156199.

It is a cyclic number.

It is not a de Polignac number, because 89321387 - 2⁴ = 89321371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89321381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9878 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (22337814).

Almost surely, 2^89321387 is an apocalyptic number.

89321387 is a deficient number, since it is larger than the sum of its proper divisors (29869).

89321387 is a wasteful number, since it uses less digits than its factorization.

89321387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29868.

The product of its digits is 72576, while the sum is 41.

The square root of 89321387 is about 9450.9992593376. Note that the first 3 decimals coincide. The cubic root of 89321387 is about 447.0112838248.

The spelling of 89321387 in words is "eighty-nine million, three hundred twenty-one thousand, three hundred eighty-seven".