89509843 has 4 divisors (see below), whose sum is σ = 89797968. Its totient is φ = 89221720.

The previous prime is 89509837. The next prime is 89509853. The reversal of 89509843 is 34890598.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34890598 = 2 ⋅17445299.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89509843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89509793 and 89509802.

It is not an unprimeable number, because it can be changed into a prime (89509853) 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, 143596 + ... + 144217.

It is an arithmetic number, because the mean of its divisors is an integer number (22449492).

Almost surely, 2^89509843 is an apocalyptic number.

89509843 is a deficient number, since it is larger than the sum of its proper divisors (288125).

89509843 is a wasteful number, since it uses less digits than its factorization.

89509843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288124.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 89509843 is about 9460.9641686247. The cubic root of 89509843 is about 447.3254406926.

The spelling of 89509843 in words is "eighty-nine million, five hundred nine thousand, eight hundred forty-three".