90223432209 has 24 divisors (see below), whose sum is σ = 131654869632. Its totient is φ = 59534503200.

The previous prime is 90223432163. The next prime is 90223432231.

90223432209 is a `hidden beast` number, since 90 + 2 + 2 + 343 + 220 + 9 = 666.

90223432209 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-90223432209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90223432289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3210232 + ... + 3238214.

It is an arithmetic number, because the mean of its divisors is an integer number (5485619568).

Almost surely, 2^90223432209 is an apocalyptic number.

It is an amenable number.

90223432209 is a deficient number, since it is larger than the sum of its proper divisors (41431437423).

90223432209 is a wasteful number, since it uses less digits than its factorization.

90223432209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31637 (or 31634 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 90223432209 in words is "ninety billion, two hundred twenty-three million, four hundred thirty-two thousand, two hundred nine".