90355309 has 8 divisors (see below), whose sum is σ = 98641152. Its totient is φ = 82081440.

The previous prime is 90355283. The next prime is 90355327.

It is a happy number.

90355309 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 90355309 - 2⁵ = 90355277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90355379) 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, 21657 + ... + 25489.

It is an arithmetic number, because the mean of its divisors is an integer number (12330144).

Almost surely, 2^90355309 is an apocalyptic number.

It is an amenable number.

90355309 is a deficient number, since it is larger than the sum of its proper divisors (8285843).

90355309 is a wasteful number, since it uses less digits than its factorization.

90355309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 90355309 is about 9505.5409630383. The cubic root of 90355309 is about 448.7294348937.

The spelling of 90355309 in words is "ninety million, three hundred fifty-five thousand, three hundred nine".