90335009 has 4 divisors (see below), whose sum is σ = 90494340. Its totient is φ = 90175680.

The previous prime is 90334969. The next prime is 90335027. The reversal of 90335009 is 90053309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9784384 + 80550625 = 3128^2 + 8975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90335009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90331009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78812 + ... + 79949.

It is an arithmetic number, because the mean of its divisors is an integer number (22623585).

Almost surely, 2^90335009 is an apocalyptic number.

It is an amenable number.

90335009 is a deficient number, since it is larger than the sum of its proper divisors (159331).

90335009 is a wasteful number, since it uses less digits than its factorization.

90335009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159330.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 90335009 is about 9504.4731048070. The cubic root of 90335009 is about 448.6958272400.

The spelling of 90335009 in words is "ninety million, three hundred thirty-five thousand, nine".