90335909 has 6 divisors (see below), whose sum is σ = 95962674. Its totient is φ = 85021760.

The previous prime is 90335893. The next prime is 90335911. The reversal of 90335909 is 90953309.

It can be written as a sum of positive squares in 3 ways, for example, as 68973025 + 21362884 = 8305^2 + 4622^2 .

It is not a de Polignac number, because 90335909 - 2⁴ = 90335893 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 (90335939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156002 + ... + 156579.

It is an arithmetic number, because the mean of its divisors is an integer number (15993779).

Almost surely, 2^90335909 is an apocalyptic number.

It is an amenable number.

90335909 is a deficient number, since it is larger than the sum of its proper divisors (5626765).

90335909 is a wasteful number, since it uses less digits than its factorization.

90335909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312615 (or 312598 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 38.

The square root of 90335909 is about 9504.5204508171. The cubic root of 90335909 is about 448.6973173412.

The spelling of 90335909 in words is "ninety million, three hundred thirty-five thousand, nine hundred nine".