90333309 has 16 divisors (see below), whose sum is σ = 132874560. Its totient is φ = 54130560.

The previous prime is 90333293. The next prime is 90333311.

90333309 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 90333309 - 2⁴ = 90333293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90333319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12442 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (8304660).

Almost surely, 2^90333309 is an apocalyptic number.

It is an amenable number.

90333309 is a deficient number, since it is larger than the sum of its proper divisors (42541251).

90333309 is a wasteful number, since it uses less digits than its factorization.

90333309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860.

The product of its (nonzero) digits is 6561, while the sum is 30.

The square root of 90333309 is about 9504.3836728112. The cubic root of 90333309 is about 448.6930125775.

The spelling of 90333309 in words is "ninety million, three hundred thirty-three thousand, three hundred nine".