90313509 has 32 divisors (see below), whose sum is σ = 146055168. Its totient is φ = 48888000.

The previous prime is 90313501. The next prime is 90313513. The reversal of 90313509 is 90531309.

It is not a de Polignac number, because 90313509 - 2³ = 90313501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90313501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9904 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (4564224).

Almost surely, 2^90313509 is an apocalyptic number.

It is an amenable number.

90313509 is a deficient number, since it is larger than the sum of its proper divisors (55741659).

90313509 is a wasteful number, since it uses less digits than its factorization.

90313509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6849.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 90313509 is about 9503.3419911103. The cubic root of 90313509 is about 448.6602274365.

The spelling of 90313509 in words is "ninety million, three hundred thirteen thousand, five hundred nine".