90889409993 has 8 divisors (see below), whose sum is σ = 91418777280. Its totient is φ = 90360283120.

The previous prime is 90889409969. The next prime is 90889410013. The reversal of 90889409993 is 39990498809.

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 90889409993 - 2⁶ = 90889409929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90889409903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728171 + ... + 843807.

It is an arithmetic number, because the mean of its divisors is an integer number (11427347160).

Almost surely, 2^90889409993 is an apocalyptic number.

It is an amenable number.

90889409993 is a deficient number, since it is larger than the sum of its proper divisors (529367287).

90889409993 is a wasteful number, since it uses less digits than its factorization.

90889409993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120207.

The product of its (nonzero) digits is 45349632, while the sum is 68.

The spelling of 90889409993 in words is "ninety billion, eight hundred eighty-nine million, four hundred nine thousand, nine hundred ninety-three".