89925785989 has 8 divisors (see below), whose sum is σ = 102539810520. Its totient is φ = 78125569536.

The previous prime is 89925785933. The next prime is 89925786011. The reversal of 89925785989 is 98958752998.

It can be written as a sum of positive squares in 4 ways, for example, as 939912964 + 88985873025 = 30658^2 + 298305^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 89925785989 - 2⁷ = 89925785861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89925785909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203451784 + ... + 203452225.

It is an arithmetic number, because the mean of its divisors is an integer number (12817476315).

Almost surely, 2^89925785989 is an apocalyptic number.

It is an amenable number.

89925785989 is a deficient number, since it is larger than the sum of its proper divisors (12614024531).

89925785989 is a wasteful number, since it uses less digits than its factorization.

89925785989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406904039.

The product of its digits is 1175731200, while the sum is 79.

The spelling of 89925785989 in words is "eighty-nine billion, nine hundred twenty-five million, seven hundred eighty-five thousand, nine hundred eighty-nine".