90266209 has 8 divisors (see below), whose sum is σ = 104264928. Its totient is φ = 77232960.

The previous prime is 90266173. The next prime is 90266221.

90266209 is nontrivially palindromic in base 10.

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 90266209 - 2⁹ = 90265697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90266249) 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, 241167 + ... + 241540.

It is an arithmetic number, because the mean of its divisors is an integer number (13033116).

Almost surely, 2^90266209 is an apocalyptic number.

It is an amenable number.

90266209 is a deficient number, since it is larger than the sum of its proper divisors (13998719).

90266209 is a wasteful number, since it uses less digits than its factorization.

90266209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482735.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 90266209 is about 9500.8530669619. The cubic root of 90266209 is about 448.5818879762.

The spelling of 90266209 in words is "ninety million, two hundred sixty-six thousand, two hundred nine".