89491613 has 8 divisors (see below), whose sum is σ = 92728800. Its totient is φ = 86311888.

The previous prime is 89491601. The next prime is 89491639. The reversal of 89491613 is 31619498.

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 89491613 - 2²⁰ = 88443037 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89491663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11183 + ... + 17436.

It is an arithmetic number, because the mean of its divisors is an integer number (11591100).

Almost surely, 2^89491613 is an apocalyptic number.

It is an amenable number.

89491613 is a deficient number, since it is larger than the sum of its proper divisors (3237187).

89491613 is a wasteful number, since it uses less digits than its factorization.

89491613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28731.

The product of its digits is 46656, while the sum is 41.

The square root of 89491613 is about 9460.0006871036. Note that the first 3 decimals coincide. The cubic root of 89491613 is about 447.2950704890.

The spelling of 89491613 in words is "eighty-nine million, four hundred ninety-one thousand, six hundred thirteen".