89686209 has 4 divisors (see below), whose sum is σ = 119581616. Its totient is φ = 59790804.

The previous prime is 89686139. The next prime is 89686249. The reversal of 89686209 is 90268698.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 89686209 - 2²¹ = 87589057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89686249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14947699 + ... + 14947704.

It is an arithmetic number, because the mean of its divisors is an integer number (29895404).

Almost surely, 2^89686209 is an apocalyptic number.

It is an amenable number.

89686209 is a deficient number, since it is larger than the sum of its proper divisors (29895407).

89686209 is a wasteful number, since it uses less digits than its factorization.

89686209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895406.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 89686209 is about 9470.2803020819. The cubic root of 89686209 is about 447.6190443045.

The spelling of 89686209 in words is "eighty-nine million, six hundred eighty-six thousand, two hundred nine".