89445769609 has 4 divisors (see below), whose sum is σ = 102223736704. Its totient is φ = 76667802516.

The previous prime is 89445769597. The next prime is 89445769613. The reversal of 89445769609 is 90696754498.

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 a cyclic number.

It is not a de Polignac number, because 89445769609 - 2⁹ = 89445769097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89445769649) 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, 6388983537 + ... + 6388983550.

It is an arithmetic number, because the mean of its divisors is an integer number (25555934176).

Almost surely, 2^89445769609 is an apocalyptic number.

It is an amenable number.

89445769609 is a deficient number, since it is larger than the sum of its proper divisors (12777967095).

89445769609 is a wasteful number, since it uses less digits than its factorization.

89445769609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777967094.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 89445769609 in words is "eighty-nine billion, four hundred forty-five million, seven hundred sixty-nine thousand, six hundred nine".