89931389 has 8 divisors (see below), whose sum is σ = 95504640. Its totient is φ = 84442176.

The previous prime is 89931383. The next prime is 89931397. The reversal of 89931389 is 98313998.

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 89931389 - 2¹² = 89927293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89931383) 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 7 ways as a sum of consecutive naturals, for example, 18797 + ... + 23090.

It is an arithmetic number, because the mean of its divisors is an integer number (11938080).

Almost surely, 2^89931389 is an apocalyptic number.

It is an amenable number.

89931389 is a deficient number, since it is larger than the sum of its proper divisors (5573251).

89931389 is a wasteful number, since it uses less digits than its factorization.

89931389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42019.

The product of its digits is 419904, while the sum is 50.

The square root of 89931389 is about 9483.2161738516. The cubic root of 89931389 is about 448.0265665714.

The spelling of 89931389 in words is "eighty-nine million, nine hundred thirty-one thousand, three hundred eighty-nine".