89391249209 has 12 divisors (see below), whose sum is σ = 96296341248. Its totient is φ = 82947950400.

The previous prime is 89391249149. The next prime is 89391249323. The reversal of 89391249209 is 90294219398.

It is not a de Polignac number, because 89391249209 - 2¹² = 89391245113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89391249109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2157737 + ... + 2198774.

It is an arithmetic number, because the mean of its divisors is an integer number (8024695104).

Almost surely, 2^89391249209 is an apocalyptic number.

It is an amenable number.

89391249209 is a deficient number, since it is larger than the sum of its proper divisors (6905092039).

89391249209 is a wasteful number, since it uses less digits than its factorization.

89391249209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356616 (or 4356599 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 89391249209 in words is "eighty-nine billion, three hundred ninety-one million, two hundred forty-nine thousand, two hundred nine".