90289939798 has 8 divisors (see below), whose sum is σ = 135441837792. Its totient is φ = 45142660536.

The previous prime is 90289939783. The next prime is 90289939801. The reversal of 90289939798 is 89793998209.

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

It is a self number, because there is not a number n which added to its sum of digits gives 90289939798.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105390 + ... + 1184257.

It is an arithmetic number, because the mean of its divisors is an integer number (16930229724).

Almost surely, 2^90289939798 is an apocalyptic number.

90289939798 is a deficient number, since it is larger than the sum of its proper divisors (45151897994).

90289939798 is a wasteful number, since it uses less digits than its factorization.

90289939798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309366.

The product of its (nonzero) digits is 158723712, while the sum is 73.

The spelling of 90289939798 in words is "ninety billion, two hundred eighty-nine million, nine hundred thirty-nine thousand, seven hundred ninety-eight".