89905209 has 8 divisors (see below), whose sum is σ = 119917632. Its totient is φ = 59914800.

The previous prime is 89905187. The next prime is 89905213. The reversal of 89905209 is 90250998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89905209 - 2¹² = 89901113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89905009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11827 + ... + 17879.

It is an arithmetic number, because the mean of its divisors is an integer number (14989704).

Almost surely, 2^89905209 is an apocalyptic number.

It is an amenable number.

89905209 is a deficient number, since it is larger than the sum of its proper divisors (30012423).

89905209 is a wasteful number, since it uses less digits than its factorization.

89905209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11007.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 89905209 is about 9481.8357399820. The cubic root of 89905209 is about 447.9830872256.

The spelling of 89905209 in words is "eighty-nine million, nine hundred five thousand, two hundred nine".