90243305 has 8 divisors (see below), whose sum is σ = 109908672. Its totient is φ = 71116848.

The previous prime is 90243301. The next prime is 90243317. The reversal of 90243305 is 50334209.

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 90243305 - 2² = 90243301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90243301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134357 + ... + 135026.

It is an arithmetic number, because the mean of its divisors is an integer number (13738584).

Almost surely, 2^90243305 is an apocalyptic number.

It is an amenable number.

90243305 is a deficient number, since it is larger than the sum of its proper divisors (19665367).

90243305 is a wasteful number, since it uses less digits than its factorization.

90243305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269455.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 90243305 is about 9499.6476250438. The cubic root of 90243305 is about 448.5439439557.

The spelling of 90243305 in words is "ninety million, two hundred forty-three thousand, three hundred five".