90233433209 has 4 divisors (see below), whose sum is σ = 90302473104. Its totient is φ = 90164393316.

The previous prime is 90233433161. The next prime is 90233433211.

90233433209 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90233433209 - 2²⁰ = 90232384633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90233433709) by changing a digit.

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, 34517987 + ... + 34520600.

It is an arithmetic number, because the mean of its divisors is an integer number (22575618276).

Almost surely, 2^90233433209 is an apocalyptic number.

It is an amenable number.

90233433209 is a deficient number, since it is larger than the sum of its proper divisors (69039895).

90233433209 is a wasteful number, since it uses less digits than its factorization.

90233433209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69039894.

The product of its (nonzero) digits is 104976, while the sum is 38.

The spelling of 90233433209 in words is "ninety billion, two hundred thirty-three million, four hundred thirty-three thousand, two hundred nine".