89181393 has 16 divisors (see below), whose sum is σ = 136070016. Its totient is φ = 50895360.

The previous prime is 89181361. The next prime is 89181401. The reversal of 89181393 is 39318198.

It is a happy number.

It is not a de Polignac number, because 89181393 - 2⁵ = 89181361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89181343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17505 + ... + 22017.

It is an arithmetic number, because the mean of its divisors is an integer number (8504376).

Almost surely, 2^89181393 is an apocalyptic number.

It is an amenable number.

89181393 is a deficient number, since it is larger than the sum of its proper divisors (46888623).

89181393 is a wasteful number, since it uses less digits than its factorization.

89181393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5464.

The product of its digits is 46656, while the sum is 42.

The square root of 89181393 is about 9443.5900482814. The cubic root of 89181393 is about 446.7776271322. Note that the first 3 decimals are identical.

The spelling of 89181393 in words is "eighty-nine million, one hundred eighty-one thousand, three hundred ninety-three".